How to run Ford wheels on a Chevy wheel pattern
From Crankshaft Coalition Wiki
m (Reverted edits by 67.65.104.249 (talk) to last revision by Cobalt327) |
(→Negative offset) |
||
| Line 25: | Line 25: | ||
For reference, the image above illustrates how bolt circle measurements are calculated for other bolt patterns. | For reference, the image above illustrates how bolt circle measurements are calculated for other bolt patterns. | ||
| + | |||
| + | == Wheel bolt circle measuring tool == | ||
| + | Often overlooked is the humble wheel bolt pattern gauge. Of the several different types available, the type that comes with the gauges on a large plastic ring may be cumbersome to use. It comes as a kit and has two separate rings, one is SAE, the other is metric, and the kit is expensive. | ||
| + | |||
| + | An alternative is part number 555-80850 available from Jegs (www.jegs.com) for less than $20.00 (shipping included). The tool works like a typical measuring caliper and measures both SAE and metric 4, 5, 6 and 8 bolt wheels. You place the points in the holes of the rims and read the corresponding chart on the tool. Or, you can place the flat pegs over the tips of the studs and read the supplied chart. The chart stays affixed to the tool, everything is self-contained. | ||
| + | |||
| + | [[File:Jegs Bolt Gage Pic1 BMP.jpg|Jegs bolt circle gauge]] | ||
==5 on 4-1/2" (5 on 114.3mm) "Ford" bolt pattern== | ==5 on 4-1/2" (5 on 114.3mm) "Ford" bolt pattern== | ||
| Line 80: | Line 87: | ||
==Bolt Pattern Adapters== | ==Bolt Pattern Adapters== | ||
Bolt pattern adapters normally fit between the rotor and the wheel. The adapters usually come with pressed in lugs for the new bolt pattern, with a lug length of about 1.5". | Bolt pattern adapters normally fit between the rotor and the wheel. The adapters usually come with pressed in lugs for the new bolt pattern, with a lug length of about 1.5". | ||
| − | These can be found on eBay for relatively cheap ($30-50USD per wheel+ shipping) in various materials and thicknesses. Note that you'll need to consider the offset/backspacing of your wheels, and factor in the adapter spacing. | + | These can be found on eBay for relatively cheap ($30-50USD per wheel+ shipping) in various materials and thicknesses. Note that you'll need to consider the offset/backspacing of your wheels, and factor in the adapter spacing. Like using non-stock wider wheel rims that have additional negative offset to fit wider tires, when you change how far the wheel centerline is away from the hub, you can (adversely) change the handling of your car. This changes the geometric relationship of the tire's contact patch to the suspension's king pin angle. If the centerline of the wheel rim is too far out, bump steer can become more noticeable and the life of your wheel bearings can be affected. Match the adapter thickness to your wheel backspacing to your intended suspension geometry. |
The adapters currently on the market range in thickness from 20mm to 3 inches. | The adapters currently on the market range in thickness from 20mm to 3 inches. | ||
[http://www.ebay.com/sch/i.html?_nkw=5x120+5x4.5+adapter&_sacat=0&_odkw=5x120+5x114.3+adapter&_osacat=0 5x120 to 5x4.5 adapters on eBay] | [http://www.ebay.com/sch/i.html?_nkw=5x120+5x4.5+adapter&_sacat=0&_odkw=5x120+5x114.3+adapter&_osacat=0 5x120 to 5x4.5 adapters on eBay] | ||
| − | One thing to consider with really thin adapters (20mm and 1 inch) is that the existing lugs on your hub may be longer than that. If the wheels you are putting on have hollow space in between the lug holes, the existing lugs may protrude into those holes (that's OK). If they don't have space for the old lugs to protrude into, you may have to shorten the lugs by | + | One thing to consider with really thin adapters (20mm and 1 inch) is that the existing lugs on your hub may be longer than that. If the wheels you are putting on have hollow space in between the lug holes, the existing lugs may protrude into those holes (that's OK). If they don't have space for the old lugs to protrude into, you may have to shorten the lugs by cutting or grinding off the appropriate amount. If your are using thicker adapters, this should not be a problems since the old lugs will be completely covered by the adapter. |
| + | |||
| + | Because using bolt pattern adapters compromise wheel rim to hub mounting strength, they may not be legal for use in some forms of automotive racing. | ||
| + | |||
| + | Some aftermarket wheel manufacturers make wheels having what is commonly called a 'unilug patten' which have elongated lug nut slots, requiring no adapter and allowing swapping between many popular bolt patterns. | ||
==Things to consider== | ==Things to consider== | ||
| Line 91: | Line 102: | ||
===Offset=== | ===Offset=== | ||
| − | The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types: | + | The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types: Remember, the offset will be changed with the installation of adapters. |
====Zero offset==== | ====Zero offset==== | ||
| Line 105: | Line 116: | ||
If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset also changes. If the offset were to stay the same while you added width, the additional width would be split evenly between the inside and outside. | If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset also changes. If the offset were to stay the same while you added width, the additional width would be split evenly between the inside and outside. | ||
| − | |||
| − | |||
[[Category:Wheels]] | [[Category:Wheels]] | ||
Your Privacy Choices