255/45/20 vs 265/45/20 vs 275/40/20 ?
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    1. #1
      Junior Member CDN XC90's Avatar
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      255/45/20 vs 265/45/20 vs 275/40/20 ?

      I'm running 255/45/20 on 20x8.5 ET40 Fast FC05. They are exact same height as my OE 235/65/17. I don't need tires this year yet but started researching a bit regardless. I found the swedespeed project XC90 article said 265/45/20 was recommended by HEICO. It's oversize... Anyone running 265/45/20 or 275/40/20? What rim width and offset?

      I am contemplating the 265, but they're considerably more expensive than the more common 255 it seems.

      I asked HEICO about that recommendation and they replied: "just 265/45R20 and 275/40R20 (275 just with 5 mm Spacer) are possible and allowed to install on the XC90 type 275 with our rim. These sizes are checked and confirmed from European and German audit and testing organisations. Please understand, if a tuner like HEICO develop a rim. The rim must be a bit bigger; the tire must be a bit wider than a OE rim from car manufacture. Customer expect this and decides for a rim from a tuner."



      85089083_10157948539621322_3000608300677988352_o.jpg
      2006 XC90 2.5T AWD - Contrast Works Stage 2 tune with Eco Enhance mode, Snabb fresh air pipe and downpipe, custom triple resonated catback, HEICO (BMC) sport air filter, Bilstein B4 front struts with HEICO rear struts and lowering springs, IPD Swaybars, strut brace conversion kit, and subframe bushing inserts. Fast FC05 20x8.5 with 255/45/20 Conti DWS06. Falken HS449 235/65/17 winters. JL 500/1 with Pioneer TS-SWX2502 subwoofer under cargo tray. LED low/hi beams, Tuxmats.

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    3. #2
      Junior Member
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      Quote Originally Posted by CDN XC90 View Post
      I'm running 255/45/20 on 20x8.5 ET40 Fast FC05. They are exact same height as my OE 235/65/17. I don't need tires this year yet but started researching a bit regardless. I found the swedespeed project XC90 article said 265/45/20 was recommended by HEICO. It's oversize... Anyone running 265/45/20 or 275/40/20? What rim width and offset?

      I am contemplating the 265, but they're considerably more expensive than the more common 255 it seems.

      I asked HEICO about that recommendation and they replied: "just 265/45R20 and 275/40R20 (275 just with 5 mm Spacer) are possible and allowed to install on the XC90 type 275 with our rim. These sizes are checked and confirmed from European and German audit and testing organisations. Please understand, if a tuner like HEICO develop a rim. The rim must be a bit bigger; the tire must be a bit wider than a OE rim from car manufacture. Customer expect this and decides for a rim from a tuner."
      I'm running 275/45-R20 Pirelli Scorpion Verde A/S on Volvo OE Cratus (20 x 8, +49mm offset).

      The clearance with the front strut lower spring seat is tight, but no rubbing.



      2009 XC90 V8 R-Design

    4. #3
      Junior Member CDN XC90's Avatar
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      Oct 2017
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      Ottawa, ON, Canada
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      Even another size, larger too. Ok, I'll include this as well in my comparisons. Thanks for the reference.
      2006 XC90 2.5T AWD - Contrast Works Stage 2 tune with Eco Enhance mode, Snabb fresh air pipe and downpipe, custom triple resonated catback, HEICO (BMC) sport air filter, Bilstein B4 front struts with HEICO rear struts and lowering springs, IPD Swaybars, strut brace conversion kit, and subframe bushing inserts. Fast FC05 20x8.5 with 255/45/20 Conti DWS06. Falken HS449 235/65/17 winters. JL 500/1 with Pioneer TS-SWX2502 subwoofer under cargo tray. LED low/hi beams, Tuxmats.

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