Tires losing psi when hot/under load

Mjpl · 08-10-2023, 01:48 PM

Heys guys,

I have been running into this issue ever since I changed my wheel setup. Currently running Apex SM10-RS 19x9.5 +28, 19x11 +44, with michelin PS4S in 265/295 30r19. I don't know/think this is related to the Apex/michelin "issues."

Whenever I drive the car hard (canyons) and temps rise/load the front tires, either mid canyon run or the drive home after, my front left tire goes down to 23-25 psi cold. I normally run 32 psi all the way around. I suspected my schrader valve was a issue and replaced it however that was not a fix (seemed like it was leaking. Tire has no visible damage or defects.

Overall just a bit confused and wanted a little insight.

AUSf22 · 08-13-2023, 09:58 PM

Perhaps check this thread?

https://f87.bimmerpost.com/forums/sh....php?t=2013081

I know you are running the SM10 but it could be a similar issue?

08-10-2023, 01:48 PM	#1
Mjpl New Member 33 Rep 13 Posts Drives: 2020 BMW M2 Competition Join Date: Dec 2022 Location: Redondo Beach iTrader: (0)	Tires losing psi when hot/under load Heys guys, I have been running into this issue ever since I changed my wheel setup. Currently running Apex SM10-RS 19x9.5 +28, 19x11 +44, with michelin PS4S in 265/295 30r19. I don't know/think this is related to the Apex/michelin "issues." Whenever I drive the car hard (canyons) and temps rise/load the front tires, either mid canyon run or the drive home after, my front left tire goes down to 23-25 psi cold. I normally run 32 psi all the way around. I suspected my schrader valve was a issue and replaced it however that was not a fix (seemed like it was leaking. Tire has no visible damage or defects. Overall just a bit confused and wanted a little insight.
	Appreciate 0 Tweet Quote

08-13-2023, 09:58 PM	#2
AUSf22 Lieutenant Colonel 2690 Rep 1,977 Posts Drives: 2020 M2C HS & Ferrari Roma Join Date: Sep 2014 Location: Sydney, Australia iTrader: (0) Garage List 2020 M2 Competition [9.83]	Perhaps check this thread? https://f87.bimmerpost.com/forums/sh....php?t=2013081 I know you are running the SM10 but it could be a similar issue? __________________ 2020 M2 Competition \| Hockenheim Silver \| 437M Wheels / 763M Wheels \| RHD \| 2NH Brakes OEM M2 CS Steering Wheel \| MP Carbon Steering Wheel Trim \| MP Pedals \| MP Dash \| MP Interior Kit OEM M2 CS Bonnet \| M Performance Coilovers \| MP Rear Spoiler \| MP Rear Diffuser\| Perl Carbon Front Lip \| Remus Race Exhaust
	Appreciate 0 Quote