Would a 30" tire slow me down?
Here is a pic of our car with 30" slicks and the stock length 12 bolt with 15x10 and 7.5 BS.

Here is a pic with 30" slicks and our Strange 12 bolt narrowed 3" on each side with 15x10s.
I do agree that trimming the rear plastic is much easier than jacking with the front metal part. Just leave room for tire growth.
With my rear/tire setup my wheel sits about 1/4" further in than stock. Not sure if thats good or bad yet...

I think the radials still "whip" around. I have pushed my axle back enough that I have only 3/4" clearance in the back and like I said over 1" in the front.
No paint is being scrubbed off the back even with the tighter clearance, but she's making shiny metal in the front.
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FWIW- I don't have more than 1/2" in front of the back tires and I'm not rubbing at all using the Hoosier Radial slicks or the 29x10.5Ws.
Here is a pic of our car with 30" slicks and the stock length 12 bolt with 15x10 and 7.5 BS.
Here is a pic with 30" slicks and our Strange 12 bolt narrowed 3" on each side with 15x10s.
god i love your car!

I think the radials still "whip" around. I have pushed my axle back enough that I have only 3/4" clearance in the back and like I said over 1" in the front.
No paint is being scrubbed off the back even with the tighter clearance, but she's making shiny metal in the front.
Take your car for example, not superlight and puling the whees up the tire may bulge out toward the front of the car during hard launches because of all the weight and force being put on the contact point on the tire and bulge rearward during hard deccelaration.

I think the radials still "whip" around. I have pushed my axle back enough that I have only 3/4" clearance in the back and like I said over 1" in the front.
No paint is being scrubbed off the back even with the tighter clearance, but she's making shiny metal in the front.
As much as 1" or more? wow.
Anyway, did a little cutting with the plasma tonight, got 90% of it done. I'm still hitting at the front at about the 9-10 o'clock position. I threw my 3/16" spacers on just for grins and everything clears, so I'm close. These are big *** tires! I'm not sure how I feel about them yet. The car sits pretty damn high now. What I might do is mini tub it, and get a wheel with like 7-7.5" BS and tuck these in more. Then I can drop the car over it.

