S197 18x10 w/305s

[NEMustang]

I have been searching the various threads for about two weeks to find the answer...no luck so I am asking here.

The car is a 2007 GT/CS. I am attempting to fit 18x10 all around for track only. I know that Roush and others fit an 18x10 all around...usually with an offset from +40mm to +45mm. I am attempting to determine if Toyo RA1 305/35/18 will fit and if so, what is that appropriate offsets (maybe different front and rear).


Limitations:

1. Do not want a staggered solution
2. No SLA or otherwise modifed suspensions. However, I am looking at the Ground Control/Koni setup which does provide an extra +5mm clearance.
3. Tires tread must not extend past fender vertical line (Track sanctioning body restriction)
4. No body changes (flares)

I am pretty certain that a +40mm to +45mm offset will work in the rear. The challenge is the proper offset in the front. I do have confirmation from someone running 295s in the Front with 18x10 +38mm offset. Since camber for the track is -2 or more (really...less...more negative!), the tread is within the front fender.

So, my challenge is to find someone running 305 or greater, all around.

Thanks in advance for any tech provided.

 

[Chris B.]

I know other people here and on other Mustang forums had issues in the past with the tires rubbing if they went wider than 285's on all 4 corners. You probably can do 305's in the rear, but up front it may cause some issues. The only people I know that have 305's and 315's up front have the Griggs suspension.

 

[DusterRT]

Might want to check this out..

http://www.percyshp.com/store/Wheelrite/Wheelrite-Wheel/Tire-Fitment-Tool/prod_112.html