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Square to Staggered?

kylezer

New Member
Jun 18, 2021
1
0
San Jose
Hi,

I have a set of 21's(265/35/21R, 245/35/21F) off a P85D+ and I'd like to put them on my S 75D with a square setup(18'). Will I run into any issues by doing this? Any tire recommendations for this setup? The 21's came with some Pilot Sports(not sure which ones), so would it be best to go with PS4S?

Thanks,
 

bishoppeak

Member
Oct 3, 2015
500
578
San Luis Obispo, CA
No fitment problems. Rougher ride, faster wear due to softer compound tires, risk of tire and wheel road damage due to lower profile tires. All 21"tires with the proper load rating seem to be about the same
 

MB2MB2

Member
May 27, 2021
26
4
Dorset
I have the exact same setup- there is a slight rubbing on full lock of the front arches. I have standard air suspension if that makes a difference.

Where do you set the wheel config in the car please?
 
Dec 26, 2018
622
550
TX
No. Just remember to update the wheel config inside the car so air suspension and range figures aren't freaking out.

The wheel configuration is mainly for ABS and TPMS. ABS & TPMS sensors are in a different location in a larger rim. The car detects that and asks if you changed wheels.

The overall OD of the 245/45/19 and 245/35/21 are almost identical - it doesn't affect the suspension height settings.
 
Sep 6, 2020
64
46
Norway
The wheel configuration is mainly for ABS and TPMS. ABS & TPMS sensors are in a different location in a larger rim. The car detects that and asks if you changed wheels.

The overall OD of the 245/45/19 and 245/35/21 are almost identical - it doesn't affect the suspension height settings.
True, but I went from 245/45/19 to 245/40/20 and the air suspension was freaking out. It started behaving when I set the wheel config to 21".
 

beatle

Active Member
Aug 31, 2019
1,268
724
Springfield, VA
That's strange. I am running the same tire size and I have my wheel size set to 19".

The air suspension doesn't actually know what size wheels you are running as they just hang off the suspension.
 
Sep 6, 2020
64
46
Norway
That's strange. I am running the same tire size and I have my wheel size set to 19".

The air suspension doesn't actually know what size wheels you are running as they just hang off the suspension.
I'm actually running lowering links so that may have something to do with it. It was dropping lots of air ans then filling it up every minute even while driving.
 

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