Quote:
Originally Posted by cjr1881
Yeah those are the only tire options in 20" and they are just fine. I would rather go taller than smaller with performance upgrades I want first gear to be useable. 285/35/20 315/30/20
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315*.30= 94.5mm sidewall
20*25.4= 508mm rim
508+94.5+94.5 = 697mm overall diameter (27.44in)
vs stock
275*.35=96.25mm sidewall
19*25.4= 482.6mm rim
482.6+96.25+96.25=675mm overall diameter (26.57in)
You're increasing your rear overall tire diameter by almost an inch.
315*.25= 78.75 mm sidewall
20*25.4 = 508mm rim
508+78.75+ 78.75 = 665.5 mm overall diameter (26.2in)
The 25's drop about .4in from stock whereas the 35's add almost a full inch in those sizes.
If I was going for 20's I'd go with the 25 and not the 30, but good luck. I think first gear will still be usable in either size, but like others have said... much taller than stock. I'd be interested to see how it looks and how far off your speedo is and if you have any rubbing issues etc.