I was wondering what the biggest tire I could fit on the back of my 88 Formula. I was thinking about doing 265/35 or 40 on the rear and maybe 225/40/17 or 18 on the front or possibly 215/40/17 or 18. What would be the biggest rear tire I could fit on the back of my Fiero it has Ryane coilover shocks all the way around and I was just kind of curious. Thanks!

Amir

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1987 GT 5 spd: 2.8L
(15.57 @ 87mph)
1988 Formula 5 spd: 3.4
(15.56 @ 84mph)

I have:
265/35/18 rear on 18x8.5"-38mm
225/40/18 front on 18x7.5"-45mm

The car's balance is great, I am VERY happy with this setup! (this fit when I had stock susp, NO coilovers!)

With coilovers, I'm sure 18x9" would not pose any problems, you could run 275/40/18 if you wanted.

Read my post in the other tire thread, about that lower link in the 88s. That's what prevents us from running 18x12"s and 335s

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Ben Cannon
88 Formula, T-top, Metalic Red. (2:13.138 at Sears Point) "Every Man Dies, not every man really Lives"
88 Formula, Northstar, Silver, In-Progreess. -Mel Gibson, "Braveheart"

Here's mine with the biggest wheels I've seen yet 19"s front and back!!

OH I'm sorry! The biggest TIRE size! MY BAD!

MOBILE

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Member MN Fieros Forever 1986 GT. Self Installed SC3800/getrag almost everything performance wise is modified/upgraded, inside and out. Over 10 years in Car Audio and Car Electronics Experiance P.S. GOT 19"s??(all the way around)