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T-Sportline 20x10 Tire Size??

We recommend the 275/40-20 tire size which is inline with the factory performance parameters.

Performance Model S:
245/35-21 Front Outer Diameter: 27.8"
265/35-21 Rear Outer Diameter: 28.3"

Our Recommendation:
245/40-20 Front Outer Diameter: 27.8"
275/40-20 Rear Outer Diameter: 28.7" (1.4% larger)

*Outer diameter slightly varies from manufacturer to manufacturer.
*Using a tire within a +/- 3% outer diameter of the factory tire is within tire industry accepted tolerances.


Supporting Member
Sep 25, 2012
Silicon Valley
This is a 2013 P85+ with 275/40-20 tires and it's triggering the low pressure monitor I'm assuming because of the size differential to the front 245/40-20.

What PSI are you filling it to? Are you sure you don't have a leak?
I had the same 275/40/20 on my rears and I filled them to 42psi and never had a low pressure issue.

Will a 295/35-20 fit with the T-Sportline +40 offset???

If the rim is 10" wide, they will fit. Will it rub, I don't know.

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