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Mike C · 04-22-2003, 09:55 AM

15" rims need 15" tires. If you measure the OD of the rim, it will be closer to 16" since the official rim measurement is taken from the tire bead seat. Either 7 or 8 inch width will be OK on the 75 series tires, but the 7's would be better IMO. Width is also measure from the tire bead seat, so measuring outside to outside on a 7" rim would be closer to 8". 9" on an 8" rim outside to outside. If it were me, I'd wait until I needed new tires and upgrade to 16" rims at the same time.

04-22-2003, 09:55 AM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,714	15" rims need 15" tires. If you measure the OD of the rim, it will be closer to 16" since the official rim measurement is taken from the tire bead seat. Either 7 or 8 inch width will be OK on the 75 series tires, but the 7's would be better IMO. Width is also measure from the tire bead seat, so measuring outside to outside on a 7" rim would be closer to 8". 9" on an 8" rim outside to outside. If it were me, I'd wait until I needed new tires and upgrade to 16" rims at the same time. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax