AFig36 Posted March 16, 2011 Share Posted March 16, 2011 I have an '11 3.6 and just bought a set of Nokian Hakkapeliitta Rs for next winter (I heard the OEM Turanzas aren't great on the snow/ice, and I could say the same about the Potenzas on my '08 Impreza). My question for the group is: The recommended PSI for the Nokians is 41--well above what's recommended for the Turanzas (which I'm guessing is around 30-32 although I haven't checked). How will this work with/affect the TPMS? From what I've read online (which may or may not be accurate), some TPMS systems seem to be set for a specific PSI, in which case I might need to have them recalibrated--if that's possible. Other systems instead seem to monitor for constant pressure between all four (4) tires, and only send a warning when there's a discrepancy between them. In this situation, I think I'd be okay as long as I had all 4 inflated to the same 41 PSI. Any thoughts on how works on the '11 Legacy? Link to comment Share on other sites More sharing options...
BAC5.2 Posted March 16, 2011 Share Posted March 16, 2011 I think they monitor differential pressures, so you should be fine. Plenty of folks run in the high 30psi range without TPMS faults. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
AFig36 Posted March 16, 2011 Author Share Posted March 16, 2011 Excellent, thanks! Link to comment Share on other sites More sharing options...
krzyss Posted March 16, 2011 Share Posted March 16, 2011 Where did you get "The recommended PSI for the Nokians is 41"? Krzys Link to comment Share on other sites More sharing options...
AFig36 Posted March 16, 2011 Author Share Posted March 16, 2011 In trying to dig up where I saw this, it turns out I confused maximum PSI with recommended, which I know is different. Also, it wasn't specific to the Nokians. The specs of the tire are 225/50R 17 XL. What I saw was over on TireRack (although I actually bought the tires from Discount Tire Direct), they said that XLs has a max psi of 41. I don't actually know what the recommended psi is, or for the Nokians specifically. P-Metric Passenger Vehicle TiresLoad Ranges Abbreviated Max Load PressureLight Load LL 35 psi (240 kPa)*Standard Load Nothing or SL 35 psi (240 kPa)*Extra Load XL 41 psi (280 kPa)**In an effort to internationally harmonize load ratings and ranges, recently introduced and future LL, SL and XL P-Metric sizes will use ISO/Euro-metric maximum load pressures of 36 or 42 psi http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=55 Link to comment Share on other sites More sharing options...
Mr. Sinister Posted March 16, 2011 Share Posted March 16, 2011 I'm pretty sure the TPMS does *not* monitor differentials. A warning is triggered if the pressure is either too low (27 psi I believe) or too high (don't know threshold) on any given wheel. Link to comment Share on other sites More sharing options...
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