How much stretch??

A 285/30/20 on a 20x11 wheel.
Thx. Pics appreciated. Asking for ricer buddy if concerned

Sumitomo htr z II's. Just enough stretch to get a good fitments but not so much that I have to run higher tire pressures.

Actual dimensions for the specific tire make & model matter more than wheel diameter or 5 points of profile (as far as the 'stretched' appearance is concerned). 285/35-18 Michelin Pilot Super Sports (10.2" claimed tread) are about 11.8" wide when mounted on 18 x 11's. Forgestar F14's in this case.

The sidewall rub strip sits outside the wheel flanges by about half a mm (feeler gauge measurement).




Norm

None. Get a tire that fits the wheel or a wheel that fits the tire. As Norm said, there's a range of widths that are acceptable. On an 11" that is 295, 305 and 315.

Actually, there are two profiles in 285 and even 275 that are industry-OK'ed for fitment to 11" wide wheels (specifically 40 and 35; the rim width ranges for 30 and 45 in those widths stop at 10.5").


Norm

Norm Peterson said:

Actually, there are two profiles in 285 and even 275 that are industry-OK'ed for fitment to 11" wide wheels (specifically 40 and 35; the rim width ranges for 30 and 45 in those widths stop at 10.5").


Norm

Click to expand...

Yep.

According to Pirelli's website, the stock size PP rubber is at the recommended limit on a 10" front and 11" rear wheel. They're stretched, but I'm running mine this way until they're shot, then it's time for a 285/305 set.