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My 2018 TTRS has a tag on the door post that reads Front PSI 39#, Rear PSI 33#. The owners manual states that front and rear rum the same pressure. I've never heard of a vehicle that runs a higher front tire pressure than the rear. The car was delivered with 35# all around. Who's right?
uberwgn is correct, the B-pillar lists max load, however it's usually what I follow. I'm not sure where you're reading in the manual that they're all supposed to be the same, because my manual has a table where you can clearly see the front is more inflated than the rear in all situations for all tire sizes... The front is simply more inflated on this car, maybe due to the weight difference. In my 370Z the rears were more inflated.
My 2018 TTRS has a tag on the door post that reads Front PSI 39#, Rear PSI 33#. The owners manual states that front and rear rum the same pressure. I've never heard of a vehicle that runs a higher front tire pressure than the rear. The car was delivered with 35# all around. Who's right?
could not find the " react-button" so quoted.
This " pigheaded Dutch selfdeclared tirepressure-specialist" calculated back that gawr rear must be 90% of front. For those weights nowadays mostly the advice pressures are calculated for normal use.
So look this up , these GAWR's
This will not say that in practice, the rear axle stays lower in weight then GAWR , overloading is possible.
Depends on build of car .
weightdivision can be different if one axle has camber angle of more then 2 degrees, but mostly done at rear, in this case you would expect front then.
The asymmetric tire loading nature of the TT was not addressed. Many/most AWD vehicles are somewhat nose heavy and the TT is no exception. And most AWD therefore tend to understeer. So higher spec’d tire pressure in the front helps address this. The RS3 goes a step further and has wider profile tires in the front as well.
Originally Posted by USe-car
My 2018 TTRS has a tag on the door post that reads Front PSI 39#, Rear PSI 33#. The owners manual states that front and rear rum the same pressure. I've never heard of a vehicle that runs a higher front tire pressure than the rear. The car was delivered with 35# all around. Who's right?
Very good information. Since I replaced the OEM wheels with the HREs I have been getting a tire pressure light stating the need to change tire pressure in the MMI. Anyone else have this issue with your TTRS with or without new wheels.
Did you reset the MMI tire pressure alarm-window? You need to do this whenever you swap/rotate tires or change pressures by a significant amount.
Additionally, do you have the optional in-tire TPMS sensors (discrete 4-tire readout) or the stock ABS-computed system? The former is more sensitive to change.
- Switch on the ignition
- Select in the Infotainment System: the Menu button > Vehicle > left control button > Service & Checks > Tire Pressure Monitor
Originally Posted by harris4crna
Very good information. Since I replaced the OEM wheels with the HREs I have been getting a tire pressure light stating the need to change tire pressure in the MMI. Anyone else have this issue with your TTRS with or without new wheels.
01-09-2019, 12:42 PM
Tire Pressure
