You can get good autox rubber down to 15". Anything smaller is NLA for rdot or summer performance tires. I have Dunlop Direzza *2 on my 15" Konigs on my SA and they are an excellent tire. Had to relearn to drive my car when I put them on. Tons of grip and one of the better rated autox tires out there as of 2016. Mine are 205/50x15. Keep the pressure up on autox days and you shouldn't have any issues with the rims being damaged. On the street I run ~33psi but if I'm doing any real driving I pump em up to about 38psi or so.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs
Project Fat Nikki Budget 12A rebuild Video setup < $30.00
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