Wheel/Tire Width Question - Need Expert Advice
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    1. #1
      Junior Member
      Join Date
      Nov 2019

      Wheel/Tire Width Question - Need Expert Advice

      Hey folks,

      So I searched the web and quickly searched the forum for an answer, but found nothing conclusive. And defiantly nothing Volvo Specific. Here's the story:

      I have a 2019 Volvo XC90 which came from the factory with 275 40 R21 Pirelli's mounted on 21x9 wheels.

      I was given a set of winter tires also in 275 40 R21, which I'd like to mount on a separate set of wheels. I have a line on a set of Volvo Polestar 21x8.5 wheels for a great price.

      Will 275's fit on them? Does 1/2 an inch really make that big of difference?

      Thanks, folks!

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    3. #2
      Member Penguin's Avatar
      Join Date
      May 2006
      Reno, NV
      Although the minimum recommended rim width for a 275R40x21 tire is 9.0" you can probably get away with using the 8.5" rim without any problem.

      The 8.5jx21 ET55 (31408013) wheel has the same center bore as the wheel on the XC90. The tire will sit 17 mm closer to suspension/brake components. That may present a problem. Measure the distance between the inner surface of the tire and the suspension and brake components to determine if there is enough clearance for the new rim/tire set up. The tire on the Polestar rim will also sit 17 mm farther away from the fender liner at the wheel arch.

      With that information, you should be able to make an informed decision. Good luck.

      2015.5 XC70 T6 Platinum Caspian Blue Metallic/Off Black, Heico Sport Suspension, IPD swaybar, Ferrita/TME Exhaust, Polestar #1640
      2014 XC60 R-Design Passion Red/Off Black, OSD, Savini BM7, Eibach Lowering Springs, IPD swaybar, Koni FSD, Polestar #1563
      2006 V70R 6M ElecSilver/Nordkap, 18" Pegs, Bell FMIC
      2004 S60R 6M TiGrey/Nordkap, 18" Ti Pegs, Bell FMIC, IPD Stage II, TME Exhaust, Eibachs, Quaife LSD

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