IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

Help Offset and Tire Question.

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Old 11-17-09, 04:07 PM
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Choiza
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Default Help Offset and Tire Question.

Hi guys, I have checked and searched the forums about wheel fitment and such. I would rather have a personal active thread about it. Yes I am very new too wheel fitment and scared. I want everything to go correctly for this part in my car.

Which of these offsets would ideally fit our cars? These are potential rim sizes I am looking at. I do plan on getting coilovers as well. Would all these setups all end up in me getting fender rolls? I don't wanna run any spacers and would just like too run these sized offsets.

Please help me guys thanks


For these sized offset what tires are recommended for me to run 215 all around?
17x9.0 +30
17x9.5 +15


For these sized offset what tires are recommended for me to run 225 all around?
18x8 +30
18x9.5 +15
18x9.5 + 20 Could this offset fit with stock ride height?
Old 11-18-09, 01:26 PM
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17x9.0 +30
Roll all four fenders, you'll need a spacer in the rear to match the front flushness.
225 will work.

17x9.5 +15
You'd have to roll then pull/flare all four fenders to fit with a 215.

18x8 +30
Fine in the front. 215/40/18
Rears won't be very flush at all.

18x9.5 + 20
Might fit if you roll then pull/flare all four.

If you are looking for flush then get a 9 +30 and 10 +30 to 10 +37 in the rear. 225 and 235 or 245. You'll have to roll all four fenders and run some negative camber, but they will be flush.

Any aggressive wheel is going to look stupid at stock ride height. You'd be better off getting coilovers first. Then get wheels.
Old 11-18-09, 05:05 PM
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Choiza
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Thanks for helping me. I really appreciate it. Yes I will be buying coilovers before rims. I just had another question how would 18x9.5 +30 fit?

I am looking for flushness. I definitly dont wanna get spacers. The setup you told me thats flush is that what you would recommend?
Old 11-18-09, 09:29 PM
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http://my.is/forums/f95/twestmans-ggp-390761/

Twestman had 18x8 +38 and 18x9.5 +38 Work vs-xx.
He added a 10mm spacer up front, making it an 8 +28 with a 215/40/18
He added a 5mm spacer to the back making it 9.5 +33 with a 245/35/18

His front still need farther to be flush. I plan to run add a 20mm spacer to make front 8 +17. It should be flush then.

His rear was pretty much perfect. That was with a 245/35 too. If you went to a 235/40 you would have even more room with a 9.5 +30. (+30 and +33 are 3mm different)

My suggestions for flush would be like this...

8 +16 with a 215/40/18
9 +19 with a 225/40/18

8.5 +22 with a 215/40/18
9.5 +25 with a 235/40/18

9 +29 with a 225/40/18
10 +32 with a 235/40/18

Twestman bought new wheels and did a test fit of the rear 18x10 +38 with a 5mm spacer (making it a 10 +33)



This, is also a picture of my 9 +37 with a 5mm spacer (making it a 9 +32) up front with a 235/40/18.



If you use the formula in this thread...

http://my.is/forums/f95/guide-wheel-...i-need-393288/

You will see that all of those end up with almost exactly the same fitment (within 1mm). So either one would be the same flushness.

And for more flushness... This is Da2Is 18x9 +30 with a 225/40/18 and 18x10 +33 with a 235/40/18.

http://my.is/forums/f90/18x9-18x10-yes-please-374829/



Keep in mind, fitment varies depending on camber settings and tires. One 215/40/18 might not be the exact same as another 215/40/18. And we all have rolled fenders, which might make the same wheel fit slightly different too.
Old 11-19-09, 11:12 AM
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Choiza
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Thank you so much for helping me. I am gonna be going with Front 18x8 +30 Rear18x9.5 + 23. I owe you big time man. Be on the look out for upcoming months. I owe you man.
Old 11-19-09, 12:14 PM
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No problem. Just be ready to do some fender rolling lol. You'll need to run a good amount of negative camber too.

And you might consider a 225/40/18 in the back. It's going to be close no matter what, but the smaller tire would make things a little easier.

You also might want a spacer up front. But you can always add that later. Good luck, and I hope you have some stiff(ish) coilovers!
Old 11-19-09, 02:20 PM
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Choiza
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Yea gonna be getting Stance GR+ in the spring bling. I will consider doing that tire set up in the rear. Front is going to be 215/40/18, rear like you said 225/40/18. Thanks man I know I will be fender rolling. Fitments so complicated haha. Thanks man I gonna need that luck. I will post pictures in the upcoming months. Can't thank you enough.. I''ll make sure to give you some free stickers from my blog when there made next year.

Thanks for helping me. And you know I think your cars nuts.!
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