Replacing Tires on a CPO... Help?

DrPhant0m · 09-04-2017, 12:45 PM

Hi. I purchased my '14 335GT as a CPO, and I ready to put new tires on it.

This was my first CPO purchase, and I understand that I have to put BMW-approved tires on it to maintain the CPO warranty.

The car came with 4x Pirelli Cinturato P7 run-flat tires, rated at 99V.

If I would buy the same tire, only in a 95V... would I still be covered? By my calculation, the 95V would still cover the GVWR on the sticker by 1000lb. However, the tire placard says "XL" meaning 99V. Will the dealership give me trouble for putting 95V tires on?

Also... I have the opportunity to buy tires that have 9.5mm tread depth, but they've been professionally patched, and the work is warranted. The price on these is really low, and if I got a screw in a brand new tire, I'd patch it instead of buy another one. Will this affect my CPO warranty? And, is it even OK to patch a run flat tire?

Thanks!

Billfitz · 09-04-2017, 01:36 PM

I doubt that tires would affect CPO, since CPO doesn't cover tires anyway. Both 95 and 99 weight ranges are listed as replacements, so that shouldn't be an issue either. Using tires that have been patched is OK as well. Again, whatever warranty issues you'd have with respect to the tires you get, be they new or used, are going to be with where you buy the tires, not your BMW dealer or BMWNA.

Star RSC BMW are those that meet BMW standards. There's no rule that says you have to use them, other than with a lease, where you have to return the car with all BMW approved parts.

Where patching run flats is concerned they can be patched like any other tire, provided that the sidewalls aren't damaged. The problem is that the sidewalls can be damaged after driving on them for only a few miles or less when flat. If they're patched they might fail from the sidewall damage, and neither the tire manufacturers nor most chain tire shops are willing to expose themselves to potential liability if that happens. Rather than examine them to be sure that the sidewall is OK they just say don't patch them.

jeffc83 · 09-05-2017, 12:48 PM

It is not required for CPO and you can get RF nor NON-RF tires, provided they are the correct size.

I would not purchase patched RF tires, guaranteed or not. No one knows how long they were driven on flat and could be compromised!

madmonkey · 09-05-2017, 01:14 PM

If I may add to good points above - try to pick tires that closely match or exceeds the speed rating of the stock tires so you don't have any weird performance issues.

09-04-2017, 12:45 PM	#1
DrPhant0m Private 14 Rep 78 Posts Drives: '14 335xGT M, Estoril Blue Join Date: Jan 2012 Location: PA iTrader: (0)	Replacing Tires on a CPO... Help? Hi. I purchased my '14 335GT as a CPO, and I ready to put new tires on it. This was my first CPO purchase, and I understand that I have to put BMW-approved tires on it to maintain the CPO warranty. The car came with 4x Pirelli Cinturato P7 run-flat tires, rated at 99V. If I would buy the same tire, only in a 95V... would I still be covered? By my calculation, the 95V would still cover the GVWR on the sticker by 1000lb. However, the tire placard says "XL" meaning 99V. Will the dealership give me trouble for putting 95V tires on? Also... I have the opportunity to buy tires that have 9.5mm tread depth, but they've been professionally patched, and the work is warranted. The price on these is really low, and if I got a screw in a brand new tire, I'd patch it instead of buy another one. Will this affect my CPO warranty? And, is it even OK to patch a run flat tire? Thanks!
	Appreciate 0 Tweet Quote

09-04-2017, 01:36 PM	#2
Billfitz Lieutenant General 8225 Rep 16,060 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	I doubt that tires would affect CPO, since CPO doesn't cover tires anyway. Both 95 and 99 weight ranges are listed as replacements, so that shouldn't be an issue either. Using tires that have been patched is OK as well. Again, whatever warranty issues you'd have with respect to the tires you get, be they new or used, are going to be with where you buy the tires, not your BMW dealer or BMWNA. Star RSC BMW are those that meet BMW standards. There's no rule that says you have to use them, other than with a lease, where you have to return the car with all BMW approved parts. Where patching run flats is concerned they can be patched like any other tire, provided that the sidewalls aren't damaged. The problem is that the sidewalls can be damaged after driving on them for only a few miles or less when flat. If they're patched they might fail from the sidewall damage, and neither the tire manufacturers nor most chain tire shops are willing to expose themselves to potential liability if that happens. Rather than examine them to be sure that the sidewall is OK they just say don't patch them.
	Appreciate 0 Quote

09-05-2017, 12:48 PM	#3
jeffc83 Lieutenant Colonel 725 Rep 1,615 Posts Drives: 2015 328i XDrive Luxury Line Join Date: Nov 2016 Location: Philly Burbs, PA iTrader: (0)	It is not required for CPO and you can get RF nor NON-RF tires, provided they are the correct size. I would not purchase patched RF tires, guaranteed or not. No one knows how long they were driven on flat and could be compromised! __________________ Originally Posted by jmg That seat was meant to be used, are you going to deny it's purpose in life?
	Appreciate 0 Quote

09-05-2017, 01:14 PM	#4
madmonkey Lieutenant 200 Rep 536 Posts Drives: 2013 335xi Alpine White Join Date: May 2010 Location: GTA iTrader: (3) Garage List 2013 335i xDrive [0.00]	If I may add to good points above - try to pick tires that closely match or exceeds the speed rating of the stock tires so you don't have any weird performance issues.
	Appreciate 0 Quote