Custom Wheels and tires

[planmgb]

I am having wheels made, 20's in rear and 19's in the front.

Has anyone tried 345's on the rear, I know 335's will work but the diameter on the 345 is closer to stock.

 

[FBA]

Yes, I'm using 345/30/20 rears and 275/35/19 fronts. Rear is still a bit lower even with a 345/30 profile (Michelin Super Sport)...but not by much. Total diameter shrinkage is about .75"...so it's marginal. I lowered using the T/A kit to compensate.

Here's the result...

http://www.fordgtforum.com/forums/s...lk-wheels.....&p=286460&viewfull=1#post286460

 

[shelbyelite]

I have 345s in the rear also

 

[RALPHIE]

For the track at Rally VI, I ran Michelin Pilot Sport Cups - 235/40R18's in front and 345/30R19's in the rear. Great tires (sticky) for the track, and I'll be saving them just for track events, and will run Goodyear OEM for normal street and highway driving. The Michelins lower the rear by 3/4" (they are about 1½" smaller in diameter in the rear) and ½" in the front; about 1 inch wider in the rear. My speedometer at 65-70 reads about 5 mph high with the Michelins in place, and about 2 mph high with the Goodyears - not much difference in speedo error. I run the Optional BBS OEM 10 spokes for both sets of tires.