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67ChevyRedneck · 04-09-2007, 02:08 PM

The tires on my truck are 235/75R15 which are 28.88" tall.

I found this neat chart online. It only shows a 31.41 and 32.61" tire for the 23" rims. Considering lots of people run 31" tires on 4x4's, even modern trucks, I don't see why it would hurt anything?

http://www.sstire.com/tireheights.html

The other big question would be rear end ratio. If you have a 3.73 and OD I wouldn't worry about it. If you're running a 3.08 gear, with the larger tire, your truck may be lugging a bit.

04-09-2007, 02:08 PM	#4
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: would 23 kill my overdrive The tires on my truck are 235/75R15 which are 28.88" tall. I found this neat chart online. It only shows a 31.41 and 32.61" tire for the 23" rims. Considering lots of people run 31" tires on 4x4's, even modern trucks, I don't see why it would hurt anything? http://www.sstire.com/tireheights.html The other big question would be rear end ratio. If you have a 3.73 and OD I wouldn't worry about it. If you're running a 3.08 gear, with the larger tire, your truck may be lugging a bit. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!