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Tyre SIZE Advice Please

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  • Tyre SIZE Advice Please

    you will have to stick with whats on, or your speedo will start and read untrue ,or get new alloys and up the rim size for lower profiles
    ​2015 Sri vx line nav Biturbo . Sri heated leather.5500k AFL . Vx line 20s,8inch LCD dash .FLEXride.Reverse cam.Irmscher grill.235hp and 480 torqs.30mm lowering springs.20mm H&R spacers all round. Mtec drilled discs on rear,VXR 355mm drilled on front,with Brembo 4 pot calipers. Auto wipers .VX puddle lights.Carbon effect black roof wrap.Irmscher roof spoiler.Irmscher side skirts.

  • #2
    The overall circumference of the 225/55/17 is the same as 245/40/19. Meaning the speedo doesn't need re-adjusting. I'm pretty sure the 18's and 20's are close enough too.

    The 225/45/17 would be significantly out. Nearly 7% lower meaning at 70mph you'd be travelling 65ish



    http://www.carbibles..._bible_pg4.html

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    • #3
      Maybe I'd put the wrong size in then.

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