I have a 356 wide body. The front of the car has the flared fender wells. I'm looking to extend the tires to better "fill out" the well. Any suggestions on what has worked best from a tire size and wheel offset? And any suggestions on the rear as well? For the rear, I'm looking at a tire around 10 to 11 inches wide. I've raised the rear of the car approx 1 1/4" to insure clearance. Appreciate any insight the community can offer? Thanks, RichG
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Just a note from someone who's been there: If you raise the rear of the car you decrease the caster in the front end and need to compensate somehow, probably with shims. Otherwise your steering can get downright scary. Raising it 1.25" will remove several degrees of caster.
I’m sorry no one is responding to your question, Robert. Not very hospitable of us. If you do an advanced search for the terms “Vredestein Sportrac” you’ll get most of the tire opinions here.
I have a Spyder, so tire consideration are different for me than with the various Speedster manufacturers.
Hey Richard, is this a CMC speedster C ? If so you can fit 205 50 15's up front and 225 50 15 tires on the back on 7" and 8" rims, no problem on a substantially lowered car.
I also have a FiberFab widebody. I'm currently running 225/35/18 Omni United Radar Dimax R8+ on all four corners a set of Boyds 18 in. x 8 in. Junkyard Dogs. They have a 5 x 4.75 in. bolt pattern and a 4.50 in. Backspace. The previous owner installed them using adapters for the standard VW 4 x 130 mm bolt pattern. When I bought the car, both rears and fronts would rub during not-so-hard cornering. The Empi 9504 adapters the PO installed were 7/8" thick. Changing out the front and rear hub/disks to ones with the Chevy bolt pattern brought the wheels inboard 7/8" all around, which solved my problem. Even in hard, fast corners my tires do not rub the fender wells. The 225 mm. tread width works out to just under 9". You could go wider in the rear by changing the backspace on the rear wheels. I don't recommend it up front, I had to adjust my steering gear stops to prevent rubbing on the insides. I haven't messed with wider tires out back, I like my tires all the same size so I can rotate them on all four corners, instead of just swapping sides. My car sticks through the corners well, with only a 3/4" sway bar up front, none out back on my IRS rear. I have to drive it hard to break the rear loose on asphalt. As far as I know, my suspension height is set up per the FiberFab manual, I've never messed with it. But you be the judge, here's a couple of recent photos.
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