Recommended Rear Tire Clearance
 

I've got to get the (used) 17" x 12" Forgeline wheels (formerly on Bad Penny) I got for my project re-hooped. Apparently Penny's Lateral Dynamics rear end is a lot narrower than mine. (The front wheels are spot on.)

Anyway, if I stuff a 13" wide tire in the rear wheel well, I've got a total (inside and outside added together) of 0.75" clearance, which seems a bit tight to me.

I was thinking about having the wheels re-hooped to 11" wide, which would give me (with the same tire) a touch over 1.125" total clearance, which I'd try to split with 0.75" on the inside and .375" at the fender.

Does that seem like too much, just enough, or not enough clearance? I don't want rubbing.

I think 3/8" clearance is snug but doable for normal driving, but will rub on the track. This is a quadralink?

It's a Lateral Dynamics 3 link that's centered with a Watts link. I don't think side to side movement will be a big issue, and this car won't see a lot of track time.

I was more concerned about the going-up-a-driveway-at-an-angle sort of thing. What I've read indicates that you can be tighter on the fender side than the inner wheel well side, because a bump will rotate the tire away from the fender and toward the inner wheel well.

I'm just trying to figure out what backspacing to go for on the re-hoop, because I don't want to do it twice.

Gotcha. I know even with a panhard bar there's some movement. Does Mark have a recommendation?

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