|
|
||||||
|
E90/E91/E92/E93 (2006 - 2013)
The E9X is the latest evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki |
|
|
|
Thread Tools | Display Modes |
|
#1
12-13-2012, 07:27 AM
|
|||
|
|||
|
RFT vs Non-RFT Air Pressure Question
The Basic question I want to ask is:
Should PSI be higher on NON RFT's compared to similar spec RFT's? I got 18" staggered wheels on my e90 and I recently put on Michelin Pilot Super Sports. User manual states I should run 36psi front/42psi back for extra load. I ran this on my old NITTO NON RFT Tires (Softer tire from what I experienced) and the fronts had shoulders wear off noting that they were under inflated. I wonder 36/42 is for RFT's and if I should run higher for these NON RFT Michelin PSS's. 
|
|
#2
12-13-2012, 07:40 AM
|
||||
|
||||
|
Quote:
Street, naw. I get best results at BMW owner's manual recommended psi.
|
|
#3
12-13-2012, 08:42 AM
|
||||
|
||||
|
+1. What CWB says for same size tires.
__________________
2009 335i xDrive coupe, Jet Black, Black Leather, Grey Poplar, Steptronic, ZPP, ZSP, ZCW, iPod/USB, HD radio, Parking Assist. Rear Fogs, Hardwire V1, ProFit G3. ED May 12, 2009, Munich dropoff May 16, Redelivery June 22, 2009  Prior 33 years of cars: 1967 BelAir wagon / 1968 LeMans Tempest / 1970 Mustang Mach 1 / 1972 El Dorado / 1978 Corvette (kept until first Bronco) / 1981 Subaru GL wagon AWD / 1983 s10 Blazer 4x4 (big mistake) / 1985 Bronco 4x4 / 1996 Bronco 4x4 / 2004 Passat 4motion
|
|
#4
12-13-2012, 09:02 AM
|
||||
|
||||
|
What they said. The type of tire does not affect the recommended air pressure. btw - there's virtually no way that 36/42 is going to result in an under inflated situation.
__________________
 "People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- Geo. OrwellKeep Right, Except to Pass Then & Than usage - "It was hotter than ever (comparison). Then (time) it got cool." 2006 330i Sonora w/ ActiveAutoWerke flash tune - I like it! 2004 330i ZHP Imola/NB - missed 2000 328i TiAg - gone but not forgotten BMW CCA member #388003 - www.bmwcca.org Use me as a referral, you could win a one day ///M Driving School!
|
|
#5
12-13-2012, 09:21 AM
|
||||
|
||||
|
I actually DROPPED my pressure by 2 PSI front and rear. I noticed my Michies were not using the outsides of the tread.
Softer ride with no noticable change in handling.
__________________
No matter how fast I go, there's always someone slower in front of me. JB4 PNP .... Love at every stomp on the go pedal!
|
|
#6
12-13-2012, 08:24 PM
|
||||
|
||||
|
Quote:
__________________
Black Sapphire Met., Black Dakota Lthr., PP, Moonroof, convenient electronic "dip stick," Steptronic. ------------------------------------------------------------------------ E90 328i E92 335i 6MT E46 M3 6MT E39 528i 5MT MBz W140 S320 MBz W124 300E (slammed) (unmentionables in between) '71 AMC Javelin (4-Spd Stick on the floor) '67 Pontiac Firebird 'cabrio' (1st car - "the leaker") ------------------------------------------------------------------------ Member: BMW CCA
|
|
#7
12-13-2012, 10:17 PM
|
|||
|
|||
|
That clears things up! Thank you.
|
|
|
| Bookmarks |
| Forum Navigation | |||||||
|
Today's Posts Search | ||||||
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
