Maintenance; Wheels - Factory Five Racing Mk4 Roadster Assembly Manual

Maintenance

Check the items on the race car check sheet in the Appendix on a yearly basis or before track days
depending on how hard the car is driven.

Wheels


Only 7"-9" wheels are recommended for the front. If using a wheel wider than 7", FFR front
lower control arms are needed to prevent the wheels rubbing the control arms.
Below is a chart indicating the REAR wheel sizes and backspacing that are possible using the Mark IV
kit:
Max Tire
width
275mm*
315mm
*Can be used up to 10.50" wide wheel
OEM 17"x 8" FRONT/REAR
AFTERMARKET 17"x 9"
AFTERMARKET 17"x 10.5"
The max rim width for a 3-link is a 10.50"
If you have any questions please call the Tech department at 508-291-3443.
If a modern look is what you're after, you may want to try the 17" Cobra™ R or FR style wheels. If
using the standard width 1987-93 rear, it is possible to use aftermarket 10.5" wide, 27mm offset wheels.
If using a rear end that has been converted to 5-lug using the "Cobra™" brake kit use two (4) 5.95"
backspace wheels.
Rear Wheel
Backspace
Equations
87-93 94-98
(Width/2)+1 (Width/2)+2
(Width/2)+1.625 (Width/2)+2.5625 (Width/2)+3.25
99-04 94-98
5.72 5.72
- 6.00
- -
480
www.factoryfive.com
99-04
(Width/2)+2.75
87-93
MAX TIRE WIDTH 245/45 R17
5.72
MAX TIRE WIDTH 275/40 R17
6.00
MAX TIRE WIDTH 315/35 R17
6.80
508-291-3443