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

Help with tire sizing to match 19" wheels

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Old 05-04-17, 09:51 PM
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srv777
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Default Help with tire sizing to match 19" wheels

Hi! Looking for some help to confirm tire sizes. Car is lowered on RSR Down springs and wheels are sized:

19x9 et +47 / 19x10 et +30.

Would tire sizes of 235/35/19 fronts and 255/30/19 rears work without rubbing?

Thanks!
Old 05-04-17, 10:25 PM
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Sasnuke
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That is some odd offset rims you have. Honestly I don't think it matters what size tire you put on, it's gonna rub somewhere.
Also, 235/35/19 has a bigger circumference than a 255/30/19.
Any chance you have the offset backwards...like the +30 is the front rim and the +47 is the rear rim? They would probably fit then without rubbing.
Old 05-05-17, 08:29 AM
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srv777
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Originally Posted by Sasnuke
That is some odd offset rims you have. Honestly I don't think it matters what size tire you put on, it's gonna rub somewhere.
Also, 235/35/19 has a bigger circumference than a 255/30/19.
Any chance you have the offset backwards...like the +30 is the front rim and the +47 is the rear rim? They would probably fit then without rubbing.
Thanks Sasnuke These wheels are coming from a 370Z, hence the strange offsets. Found a set for a good price so thought it would be worth a try. Probably not worth the trouble!
Old 05-05-17, 08:36 AM
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Sasnuke
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Originally Posted by srv777
Thanks Sasnuke These wheels are coming from a 370Z, hence the strange offsets. Found a set for a good price so thought it would be worth a try. Probably not worth the trouble!
That makes sense.
I would say a test fit of the rims would be your best bet. The front would be inside the wheel well pretty far, so rubbing on full lock turns, clearing the brakes, or hitting the suspension would be the main concern.
For the rear they would be out pretty far, to rubbing on the fender would be the issue there.
You could use spacers on the front which would resolve the issue if they were in too far.
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