C6 wheels w/ 275/40 or 35/ 18?
03-11-2006, 11:07 PM
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Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
C6 wheels w/ 275/40 or 35/ 18?
i'm planning on ordering a set of aftermarket C6 rims 18x9.5 w/ 50mm offset and wondering what size tires to run either Kumho Ecsta MX's 275/40/18 or 275/35/18.
i want to go with the 40 series just to have a bit more cushion but i'm not sure if they will rub.i'm going to run these rims with 2 in. spacers in the front and probably 1.75 or 2 in the rear.
any one running something similar or have any suggetions?
i want to go with the 40 series just to have a bit more cushion but i'm not sure if they will rub.i'm going to run these rims with 2 in. spacers in the front and probably 1.75 or 2 in the rear.
any one running something similar or have any suggetions?
03-12-2006, 09:03 AM
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275/35/18 would be the tire to get if you wanna get close to the OEM tire height. If the car wasn't dropped alot then the 275/40/18 would work but it would be taller than stock.
03-13-2006, 01:19 AM
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Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
thanks i'll be going with the 35 series just to be on the safe side but are two inch spacers reccomended all the way around?
i don't want my tire to rub and it doesn't at all right now with the 18x8 in. Irocs with 245/40/18 i did some math with the skulte formula...(17x9.5", 50mm Offset)
9.5" / 2 + 50mm / 25.4 Offset + 0.25" Lip = 6.97" Backspacing
Rim Backspacing - Max Backspacing = Adapter Thickness
6.97" - 5" = 1.97" Front Adapter Necessary
6.97" - 5.85" = 1.12" Rear Adapter Necessary
i don't want my tire to rub and it doesn't at all right now with the 18x8 in. Irocs with 245/40/18 i did some math with the skulte formula...(17x9.5", 50mm Offset)
9.5" / 2 + 50mm / 25.4 Offset + 0.25" Lip = 6.97" Backspacing
Rim Backspacing - Max Backspacing = Adapter Thickness
6.97" - 5" = 1.97" Front Adapter Necessary
6.97" - 5.85" = 1.12" Rear Adapter Necessary
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