To Swap or Not to Swap, that is the Question

[Mike_F]

I have a P100D with a staggered tire configuration (P245/35 front, P265/35 rear) and I am planning a road trip from SF Bay area to Denver via Las Vegas. There are no service centers between LV and Denver and having had issues with sidewall damage due to road hazards (rocks on the road) I was considering bringing a spare P245/35 that I have from a previous MS. The only question is if the (possible) damaged tire is one of the rear tires, what issues arise when the car has 3 P245/35 and 1 P265/35 until I can get a proper replacement (Murphy's law insists that one of the rears will be the problem).

 

[The Duke]

Bring two?

 

[Randaddy]

You might get some TPMS warnings due to variations in tire pressure/rotational speeds between the mismatched rear wheels. The diff/gearbox should be able to mitigate any driving dynamic concerns though.

 

[jaguar36]

None.
Well..Your 0-60 time might suffer by 0.1s or something.