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Can anyone tell me the widest wheel that will fit on the 05 goat. I want to get some wide 18s or 19s to do the auto cross next spring.
 
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ok, here ya go

245 - width in millimeters of the tread itself, not actually the tire
45 - aspect ratio of the tire. So this tire is 45% of 245mm in height
17 - diameter of the wheel your mounting the tire to.

Here is some trick math for ya.

245-45-17 is the same height as a 255-40-17 or a 245-35-18.

When staying with the same rim, when you increase width by 10, decrease your aspect ratio by 5. When changing rims, also known as plus sizing, for every increase in rim size, you want to decrease your aspect ratio by 10.

This will keep the overall diameter roughly the same.
 
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say your a 245-45-17 and you want more width. you have these to choose from.

255-40-17
265-35-17
275-40-17
285-35-17
315-35-17
335-30-17
 
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EEZ GOAT said:
good question. well mike? what are the tires on the 05-06 vett thats how wide i want mine. thoughts plz :cool
2006 Corvette is as follows, 05 was the same.

245/40ZR18.0 on an 18x8.5 rim
285/35ZR19.0 on a 19x10 rim
 

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Had to roll the drivers side with 245/40/18's. But I went with foose wheels 18x8.5. Alittle more offset out for more lip on the rim.
 

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You should be able to put 275/40/17's nitto's on with no problems. Their not as wide as advertised anyway, just a little narrower, more like 255-260 for some reason. Thats probably what I'll end up doing anyway.
 
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