black 18" z06 wheels on a jimmy
Super Member
Joined: Apr 2009
Posts: 1,384
From: Oklahoma
your closest tire size (to the stock truck size of 235/75/15) is going to be 275/50/18. this gives you a OD of 28.82 inches (compared to 28.87 inches), making it out by 0.18% the Z06's tire of 275/40/18 is only 26.66 inches, out by 7.66% more than the 3% maximum to maintain speedo/ABS function.
you can also try 245/55/18, OD of 28.61 inches, out by 0.91%, or a 245/60/18, OD of 29.57 inches, out by 2.37%-but your speedo will show slower than actual speed by 2.5 mph, not good.
go to a tire shop, look at the sizes i've thrown @ you, and see what you like. a 50 series side wall, on that wide of a tire is going to be pretty tall, so it may be to your liking.
hope this helped.
you can also try 245/55/18, OD of 28.61 inches, out by 0.91%, or a 245/60/18, OD of 29.57 inches, out by 2.37%-but your speedo will show slower than actual speed by 2.5 mph, not good.
go to a tire shop, look at the sizes i've thrown @ you, and see what you like. a 50 series side wall, on that wide of a tire is going to be pretty tall, so it may be to your liking.
hope this helped.
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