Ever looked at your truck’s wheels and wondered what those numbers mean? If you’re seeing “8×170” somewhere, you’re in the right place.
This guide will help you understand everything about 8×170 wheels and why getting the right bolt pattern matters.
8×170 wheels are specifically designed with eight lug nuts arranged in a circle with a diameter of 170mm.
Think of it like a clock face with eight evenly-spaced points where the wheel attaches to your vehicle. This pattern is common on Ford Super Duty trucks from 1999 onwards.
Getting your wheel’s bolt pattern right isn’t just about making sure it fits – it’s about keeping you safe on the road.
The wrong pattern can lead to vibration, uneven wear, and even wheel separation. In this guide, we’ll walk you through choosing the right wheels, checking compatibility, and avoiding common mistakes.
Whether you’re upgrading your wheels or replacing damaged ones, we’ve got you covered with straightforward, trustworthy advice based on real experience.
Understanding the 8×170 Bolt Pattern
What Does “8×170” Mean?
Let me break down this number pattern for you. The “8” tells you how many lug nuts or bolts secure your wheel to the vehicle.
The “170” represents the diameter of the circle formed by these lug nuts, measured in millimeters.
Picture drawing a circle through the center of all lug nuts – that circle would be 170mm across. Getting these measurements right is crucial because they must match your vehicle’s hub exactly.
Vehicles That Commonly Use 8×170 Wheels
You’ll find this bolt pattern mostly on Ford Super Duty trucks. Here’s where you can spot them:
- Ford F-250 Super Duty (1999-present)
- Ford F-350 Super Duty (1999-present)
- Ford F-450 Super Duty (1999-present)
- Ford Excursion (2000-2005)
Benefits of the 8×170 Bolt Pattern
This pattern isn’t just a random choice by Ford – it brings real advantages to your truck. Eight lug nuts provide superior stability compared to patterns with fewer points of contact.
The 170mm diameter creates an ideal balance between strength and weight distribution. When you’re hauling heavy loads or towing, this extra security makes a real difference.
Plus, the larger bolt circle helps distribute force more evenly across your wheel hub, which can extend the life of your wheels and hub assembly.
Remember, if you’re looking to upgrade your wheels or need replacements, double-checking your bolt pattern measurements can save you from a costly mistake.
While 8×170 is standard for super-duty trucks, always verify your specific model’s requirements.
Features to Look for in 8×170 Wheels
Material and Build Quality
When you’re choosing wheels for your truck, the material matters more than you might think. Most 8×170 wheels come in either steel or aluminum alloy.
Steel wheels are tough and budget-friendly, perfect if you’re hitting rough terrain often. Aluminum alloy wheels, while pricier, offer a better strength-to-weight ratio and won’t rust.
Tip: Look for one-piece cast construction for the best balance of strength and value.
Load Capacity and Durability
Your wheels need to handle everything you throw at them. For 8×170 wheels, pay attention to the load rating – it should match or exceed your truck’s maximum load capacity.
Most Super Duty applications need wheels rated for at least 3,500 pounds each. The key numbers to check are:
- Load rating (in pounds)
- Maximum PSI rating
- Wheel width and offset
Finish Options
Your wheels don’t just have to work well, they can look good too. Here’s what each finish offers:
- Painted: Most durable, easy to maintain, great for work trucks
- Chrome: Classic shine, needs regular cleaning to prevent oxidation
- Polished: The middle ground between painted and chrome, gives a clean look Remember, coastal areas or roads with heavy salt use might want to skip chrome due to potential corrosion.
Compatibility with Different Tire Sizes
The right wheel needs to work with your preferred tire size. Most 8×170 wheels come in diameters from 17 to 24 inches. Consider these factors for tire fitting:
- Wheel width (usually 8 to 12 inches)
- Backspacing and offset measurements
- Recommended tire width range
- Clearance for brake calipers and suspension components
A wider wheel generally means better stability and handling, but make sure it fits within your truck’s wheel wells without rubbing.
If you’re planning to lift your truck or run oversized tires, factor that into your wheel choice.
New wheels open up your tire choices significantly. Stock wheels sometimes limit your options, but aftermarket 8×170 wheels let you run different tire sizes and styles.
Want to fit those meaty off-road tires? Now you can. Moving up to larger diameter wheels means you can run lower-profile tires for better handling on pavement.
Bigger wheels also mean more room for bigger brakes if you’re planning future upgrades.
Many newer 8×170 wheels are designed with extra clearance for performance brake kits, something worth thinking about if you tow regularly or just want better stopping power.
Benefits of Upgrading to 8×170 Wheels
Improved Performance and Load Handling
Upgrading your stock wheels can make a real difference in how your truck performs. Modern 8×170 wheels often use advanced alloys that cut down weight while keeping strength.
This means your truck’s suspension doesn’t have to work as hard, and you’ll notice better braking response.
Think about it like switching from work boots to running shoes – same support, but more agile.
Heavy haulers, listen up: newer 8×170 wheels often have reinforced mounting areas that spread weight more evenly.
This means less stress on your hub bearings when you’re pulling that trailer or hauling a bed full of gravel. Better weight distribution equals longer part life and more confident towing.
Classy Enhancements for Your Vehicle
Let’s be honest – looks matter. Upgrading your wheels can transform your truck from a worksite warrior to a head-turner.
Today’s 8×170 wheels come in styles that complement both modern and classic truck designs. You’re not just limited to chrome anymore – manufacturers offer:
- Deep-lip designs that add depth to your truck’s profile
- Matte black finishes that give a stealthy, modern look
- Two-tone options that tie in with your truck’s color scheme
- Machine-finished faces that catch the light just right
Access to a Wider Variety of Tire Options
New wheels open up your tire choices significantly. Stock wheels sometimes limit your options, but aftermarket 8×170 wheels let you run different tire sizes and styles.
Want to fit those meaty off-road tires? Now you can. Moving up to larger diameter wheels means you can run lower-profile tires for better handling on pavement.
Bigger wheels also mean more room for bigger brakes if you’re planning future upgrades.
Many newer 8×170 wheels are designed with extra clearance for performance brake kits, something worth thinking about if you tow regularly or just want better stopping power.
Popular Vehicle Models That Use 8×170 Wheels
Ford Super Duty Applications
| Year Range | Vehicle Model | Notes |
|---|---|---|
| 1999-Present | Ford F-250 Super Duty | All trim levels are compatible |
| 1999-Present | Ford F-350 Super Duty | Both SRW and DRW models |
| 1999-Present | Ford F-450 Super Duty | Primarily DRW configurations |
| 2000-2005 | Ford Excursion | All engine options |
Compatible Heavy-Duty Vehicles
| Vehicle Type | Compatible Models | Special Considerations |
|---|---|---|
| Custom Trucks | Modified Heavy-Duty Builds | Must verify hub bore diameter |
| Military Vehicles | Select Tactical Vehicles | Special load ratings required |
| Commercial Trucks | Custom Fleet Vehicles | Check weight ratings |
| Specialized Equipment | Heavy Equipment Haulers | May need reinforced wheels |
Heavy-Duty Application Benefits
| Feature | Benefit | Impact |
|---|---|---|
| 8-Lug Design | Enhanced Load Distribution | Better weight handling |
| 170mm Bolt Circle | Larger Contact Area | Improved stability |
| Heavy-Duty Construction | Higher Load Capacity | Safer towing and hauling |
| Wide Wheel Options | Multiple Tire Choices | Greater versatility |
| Robust Hub Design | Better Heat Dissipation | Longer bearing life |
Note: Always verify your specific vehicle’s requirements as specifications can vary by region and model year.
Comparing 8×170 Wheels to Other Bolt Patterns
Bolt Pattern Comparison
| Feature | 8×170 Pattern | 8×180 Pattern | 6-Lug Pattern |
|---|---|---|---|
| Common Vehicles | Ford Super Duty | GM/Chevy HD Trucks | Half-ton Trucks |
| Years Used | 1999-Present | 2001-Present | Various |
| Load Rating | Up to 4,500 lbs/wheel | Up to 4,800 lbs/wheel | Up to 3,500 lbs/wheel |
| Hub Bore Size | 125mm typical | 124.9mm typical | 106.1mm typical |
Performance Comparison
| Aspect | 8×170 | 8×180 | 6-Lug |
|---|---|---|---|
| Strength Rating | Very High | Very High | Moderate |
| Weight Distribution | Excellent | Excellent | Good |
| Brake Clearance | Large | Large | Limited |
| Off-Road Durability | Excellent | Excellent | Good |
Market Availability and Cost
| Factor | 8×170 | 8×180 | 6-Lug |
|---|---|---|---|
| Price Range (Steel) | $150-300 | $160-320 | $100-250 |
| Price Range (Alloy) | $200-800+ | $220-850+ | $150-600 |
| Style Options | Many | Many | Extensive |
| Aftermarket Support | Strong | Strong | Very Strong |
| Custom Options | Moderate | Moderate | Extensive |
Special Considerations
| Type | Advantages | Limitations |
|---|---|---|
| 8×170 | • Ford factory standard• Wide heavy-duty selection• Proven reliability | • No cross-compatibility• Higher cost |
| 8×180 | • GM/Chevy standard• Slightly higher load ratings• Modern design | • Limited to GM applications• Higher cost |
| 6-Lug | • More affordable• Lighter weight• More style choices | • Lower load capacity• Not for heavy-duty use |
Note: Prices and availability may vary by region and market conditions. Always verify the specifications for your specific application.
Tips for Choosing the Right 8×170 Wheels
Measuring Your Bolt Pattern Accurately
Getting exact measurements is crucial for a perfect fit. While you know you need 8×170 wheels, double-checking never hurts.
Here’s how to measure properly: pick any lug hole and measure to the fourth hole directly across from it (crossing the center).
You’ll want this to be exactly 170mm. A common mistake is measuring from edge to edge – always measure from the centers of the holes.
When measuring, consider these points:
- Use a proper bolt pattern gauge if possible
- Check the center bore diameter of your current wheels
- Verify the thread size of your lug nuts
- Take measurements with wheels off the vehicle for the best accuracy
Factors to Consider: Size, Offset, and Backspacing
These measurements affect how your wheels fit and how your truck handles. Let me break it down:
Offset is the distance from your wheel’s mounting surface to its centerline. A positive offset means the mounting surface is toward the outside.
A negative means it’s toward the inside. Your truck’s suspension geometry and fender clearance depend on getting this right.
Backspacing tells you how far your wheel’s mounting surface sits from the back edge of the wheel.
Too little backspacing and your tires might rub on suspension parts; too much and they could hit your fenders.
Aim for measurements that match your driving style and any suspension modifications you’ve made.
How to Choose Wheels Based on Your Driving Needs?
Think about how you use your truck. Different situations need different wheel features:
For Daily Driving:
- Lighter wheels for better fuel economy
- All-season friendly designs
- Easy-to-clean finishes
For Heavy Hauling:
- Maximum load rating
- Reinforced construction
- Conservative sizing for better tire options
For Off-Road Use:
- Extra sidewall protection
- Bead-lock compatible designs
- Tough finishes that resist scratches
Remember, the perfect wheel balances your needs with your truck’s capabilities. Don’t get caught up in just looks – performance and durability should drive your decision. Most importantly, make sure any wheel you choose meets or exceeds your vehicle’s load ratings.
How to Maintain and Care for 8×170 Wheels?
Your wheels take a beating from road grime, brake dust, and weather. Here’s how to keep them looking sharp longer.
First, always clean your wheels when they’re cool – hot wheels can cause cleaning products to evaporate too quickly, leaving residue behind.
Use wheel-specific cleaners that match your wheel’s finish:
For regular cleaning:
- Spray the cleaner from bottom to top
- Let it sit for 30 seconds (but don’t let it dry)
- Use a soft brush for tight spots
- Rinse thoroughly with clean water
For polishing, less is more. Use the right polish for your wheel’s finish – what works on chrome might damage painted wheels. Make slow, overlapping passes with your polishing cloth, and always finish with a microfiber towel.
Preventing Rust and Corrosion on Wheels
Salt, road chemicals, and moisture are your wheels’ worst enemies. The key to preventing rust is staying ahead of it.
After driving in winter conditions or through coastal areas, give your wheels a thorough rinse as soon as possible. Pay special attention to:
- Behind the spokes
- Around lug nut holes
- The barrel of the wheel
- Any scratches or chips
Apply a wheel sealant every few months – think of it like wax for your wheels. It creates a barrier against corrosive elements and makes future cleaning easier.
Regular Inspection for Damage or Alignment Issues
Make wheel inspection part of your routine maintenance. Every few weeks, take a close look at your wheels. Watch for:
- Unusual wear patterns on tires (could indicate alignment issues)
- Bent or cracked rims
- Loose lug nuts
- Signs of rubbing or scraping
- Vibration while driving
If you notice any vibration or pulling while driving, don’t wait – get it checked out. Small issues can become big problems quickly when you’re running heavy loads.
Check your lug nuts’ torque after the first 50 miles with new wheels, then regularly as part of your maintenance routine.
When washing your truck, take that extra minute to inspect your wheels up close. A small crack or bend caught early might save you from a bigger problem down the road.
Remember, your wheels are what keep you connected to the road – giving them proper care isn’t just about looks, it’s about safety.
Conclusion
Choosing the right wheels for your heavy-duty truck doesn’t have to be complicated. The 8×170 bolt pattern has proven itself time and again as a reliable choice for serious hauling and everyday use.
Remember, your wheels are more than just looks – they’re a crucial safety component. Take time to measure twice, and don’t rush your decision.
Quality matters more than saving a few bucks, especially when you’re hauling heavy loads or towing.
Keep up with regular cleaning and inspections, and your wheels will serve you well for years. Whether you’re upgrading for better performance or replacing worn wheels, you now have the knowledge to make a confident choice.
The perfect set of 8×170 wheels is out there waiting for you – and now you know exactly what to look for.
Drive safe, and enjoy those new wheels!
Frequently Asked Questions
How Do I Know if My Truck Needs 8×170 Wheels?
If you own a Ford Super Duty truck from 1999 onwards (F-250, F-350, or F-450), your vehicle likely uses the 8×170 bolt pattern.
You can verify this by counting the lug nuts (should be 8) and measuring the diameter across the bolt circle. Pro tip: Measure from the center of one lug hole to the center of the hole directly across the hub.
What Is the Best Material for 8×170 Wheels?
For most drivers, aluminum alloy wheels offer the best balance of strength and weight. They’re lighter than steel, won’t rust, and handle heat better.
However, if you’re doing heavy off-road driving or need maximum durability at a lower cost, steel wheels might be your better option.
Can I Use Different Size Tires With 8×170 Wheels?
Yes, but you need to stay within your truck’s recommended specs. The wheel’s width and diameter will determine your tire options.
Remember: Going too large or too wide can affect your speedometer accuracy and might cause rubbing against your fenders or suspension components.
Why Do My 8×170 Wheels Need Regular Torque Checks?
Heavy-duty trucks create more stress on wheel components due to their weight and typical use. Temperature changes and regular driving can cause lug nuts to loosen over time.
Checking torque specs monthly helps prevent wheel-related safety issues and ensures even load distribution.
What’s the Typical Price Range for Quality 8×170 Wheels?
Quality 8×170 wheels typically range from $200 to $500 per wheel, depending on size, material, and finish.
Budget tip: While it’s tempting to go for cheaper options, investing in quality wheels from reputable manufacturers can save money in the long run through better durability and fewer replacements.