Tires...

sk8r4life2112

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I have the stock rims on my 01 cobra with some pos tires that were on the car when i got them. Iv noticed its about time to change my tires, however the KDW2's dont have a 245/45/17 and i searched through the search thread and saw that a few people asked this question before and members replied saying that a 275 is the biggest you could put on without any problems. Now the problem starts...I mentioned to my dad that there were no 245/45's and that i want to put on 255/40's but he says that once you change tire size from factory you run into problems. Any info on anyone experiencing problems changing such a minimal tire size?

Thanks
 

01vert

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Many different tire manufacturers have a variation in the actual width of tires sold as the same size ie: nitto DR 275s are smaller widthwise than other 275s

You are talking about 1/3 of an inch or so, not a lot. Also 03 and 04 cobras use a 275 front and rear with wider rims so these cars can use a wider tire.

I would treat a 245 and a 255 as the same animal, but I would want to know overall height with the different profile, as a smaller tire overall will make your wheelwells look even huger than with stock tires
 
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sk8r4life2112

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thats pretty much exactly what I told my dad, but he seems to think that everything that I find on the internet on the forums is wrong.
 

Orange Stang 04

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Lol, problems? Nah, if anything the speedometer might be slightly off, not sure how tall those tires are compared to the stockers, but I wouldn't imagine much.
 

OzzDOA

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Only problem would be your speedo would be off slightly (1-2%). As long as the over-all diameter of the wheel/tire combo is close to stock and not so wide as to have rubbing then no problems. There are a bunch of tire size calculators on the interwebs that will help with fitment issues.
 

scotts99snake

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If you go to 1010tires.com, in the tech section they have a tire size calculator. You can play around with different tire sizes and find out overall height, revs per mile, etc. I realize it doesn't take into account differences in manufacturer sizes, but they are minimal between companies anyway. I have found it very helpful.
 

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