Rims and dropping
Starting Member
Joined: Aug 2008
Posts: 193
From: Ala Freakin Bama
Ok, you asked for it! Your math is WRONG! 
You need to double the side wall to come up with the diameter of the tire.
245/35/20 => 245*.35/25.4 = 3.38" per sidewall => 3.38*2+20 = 26.75" OD
235/70/15 => 235*.70/25.4 = 6.48" per sidewall => 6.48*2+15 = 27.95" OD
To better match the stock tires, I would go with a 245/40/20 (OD of 27.7").
You need to double the side wall to come up with the diameter of the tire.
245/35/20 => 245*.35/25.4 = 3.38" per sidewall => 3.38*2+20 = 26.75" OD
235/70/15 => 235*.70/25.4 = 6.48" per sidewall => 6.48*2+15 = 27.95" OD
To better match the stock tires, I would go with a 245/40/20 (OD of 27.7").
Edit, nevermind. It's converting from mm to inches.
Last edited by MrJP; Feb 12, 2010 at 04:47 PM.
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ShaneInsane
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