Overview
The Pro Comp 72 Series Axis is a 20 inch by 10 inch aluminum spoke wheel with an 8 on 170 bolt pattern and a satin black milled finish. It has a 125 center bore and a -18 offset, and it is part number PXA5172-21070.
Low-pressure casting technology gives these alloys their strength, style and value. The wheel has a styled look, a light weight and a durable finish.
When you compare this wheel with others in the 72 Series, look at diameter, width, bolt pattern, center bore and offset together. Two wheels can share a size and still differ in center bore or backspacing, so the full set of numbers matters more than the series name.
A wheel’s bolt pattern, center bore and offset decide whether it can be mounted to a given hub, and the offset and backspacing set where the mounting face sits relative to the wheel’s centerline. Check those numbers before ordering, because a wheel that looks right can still sit too far in or out.
Key features
- 20 inch diameter and 10 inch width
- Spoke style in the Pro Comp 72 Series
- Satin black milled finish
- Aluminum construction
- 8 on 170 bolt pattern
- -18 offset and 4.75 backspacing
Hub centering and bolt patterns
An 8 on 170 bolt pattern is found on heavy-duty trucks and some full-size SUVs, and the center bore is the part that centers the wheel on the hub. The lug nuts carry the clamping load, but the center bore keeps the wheel from shifting under braking and cornering. Matching both numbers is the first check before any other fit decision.
Lug nuts for an 8 lug wheel usually have a specific seat type, and using the wrong seat can damage the wheel or loosen under load. Check the thread size and seat before mounting, and keep the wheel and its nuts together in storage so the correct set is used later.
- Confirm the bolt pattern before buying
- Check the center bore against the hub pilot
- Match the lug seat type to the nuts
- Re-torque lug nuts after the first drive
Specifications
| Brand | Pro Comp Alloy Wheels |
|---|---|
| Part number | PXA5172-21070 |
| Diameter | 20 inches |
| Width | 10 inches |
| Bolt pattern | 8 on 170 |
| Center bore | 125 |
| Offset | -18 |
| Backspacing | 4.75 |
| Style | Spoke |
| Series | 72 Series Axis, satin black |
| Construction | Aluminum |
| Fit | Labeled universal fit |
Vehicle fitment
No vehicle is named for this wheel. It is a universal fit, but fitment depends on the hub’s bolt pattern, center bore and offset. Compare those with your vehicle before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check the 8 on 170 bolt pattern and the 125 center bore against the hub before mounting. The -18 offset places the mounting face further outward than a zero offset wheel would, so check clearance to the fenders, brakes and suspension.
What’s included
One 20 inch wheel. Center caps are not confirmed for this wheel.
