IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Wheels fitment question

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Old Dec 2, 2015 | 03:04 AM
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Default Wheels fitment question

I've the IS250 F sport.

I know the stock rear wheels is 18 x 8.5-in. Will 255/40R18 tire on 18 x 8.0-in for rear (taken from IS 350) fit my IS250 F sport? Will there be any danger driving in that size wheel?
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Old Dec 2, 2015 | 11:08 AM
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if you're riding stock height, a taller tire should fit fine
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Old Dec 2, 2015 | 01:21 PM
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The tires is the same size as the stock tire. The only difference is the 8.5" stock vs 8.0" (the one I'm thinking of buying).

Is 8.5" the width or height of the wheel?

Sorry for the noob quotation.
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Old Dec 2, 2015 | 01:26 PM
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it will fit
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Old Dec 3, 2015 | 01:51 AM
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Oh my,... just found out my stock rear tire size is 255/35/18, not 255/40/18....

So, will 225/40/18 front & 255/40/18 rear fit my stock 225/40/18 front & 255/35/18 rear?
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Old Dec 3, 2015 | 02:26 AM
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should be fine

35 -> 40 is
35% vs 40% of 255


Disregard what I said earlier. I got the numbers messed up

it is Width / size /
sorry ignore

Last edited by Taideee; Dec 3, 2015 at 02:30 AM.
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Old Dec 3, 2015 | 07:13 AM
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Originally Posted by dnasians
it will fit
like i said, it will fit if you're stock height
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