Offset question . . .

1176 Views 8 Replies 4 Participants Last post by beezy, Jan 26, 2006

beezy

Discussion Starter · Jan 24, 2006

Hey guys, jus a quick reply cuz I know its been asked alot prolly but searched and had some truble finding a strait answer.

So im planning to get some 18x7.5 with a +45 offset. Will these work well with 225/45/18 and gold line lowered springs (2inch drop). Im a newb bout tire offsets and stuff so any comments or suggestions are welcome. thnx!

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neo-truth

· #2 · Jan 25, 2006

I think you'd want 225/40 or 225/35 with 18" rims. Otherwise, you're going to throw your speedometer way off... and I'm not sure about clearance issues. I don't know about offset. Maybe someone else can enlighten you.

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beezy

Discussion Starter · #3 · Jan 25, 2006

yea its jus im gettin a good deal on 225/45's which is why im tryin to get some advice.

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neo-truth

· #4 · Jan 25, 2006

225/45/18 will throw your speedo off by 5.5%. It would increase the circumference of your wheel+tire to 108.07mm, which is about 4.25 inches. That's a lot, I'd think... I don't know if you will have clearance issues or not, but that's throwing your speedometer off quite a bit. I'm a novice at this stuff though... I'm sure someone else here on the boards can better advise you.

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simplespirit

· #5 · Jan 25, 2006

215/45R17 (stock) = 24.62 inches
225/45R18 = 25.97 inches

New tires would be 1.35 inches taller overall.

Your speedometer would also be off 5% which means when it reads 75mph you'd actually be going ~79mph.

I can't say for sure that it will happen but I'd definitely be worried about rubbing.

As for the offset, you should probably be fine with a 225 tire but like neo said it will need to be a 225/40 which is slightly taller than stock or a 225/35 which is slightly shorter than stock (both slightly less than a half inch difference overall).