Any issues remounting tires?

[bigx5er]

Long story, but we are considering a second X5 and would like to take the non-RFTs off the 2011 X5 and put them on the 2012 X5 (replacing the run flats).

Don't ask why, there is a good reason.

Question is if it is an issue remounting tires? Are they damaged unmounting/remounting them?

[lucky no. 8]

Originally Posted by bigx5er

Long story, but we are considering a second X5 and would like to take the non-RFTs off the 2011 X5 and put them on the 2012 X5 (replacing the run flats).

Don't ask why, there is a good reason.

Question is if it is an issue remounting tires? Are they damaged unmounting/remounting them?

As long as they match the specs for the new rims there will be no problem getting them remounted. Of course the right equipment is a prerequisite - any decent tire store should be able to make it happen but it is always useful to ask them if they are able to deal with run flats

[E70x5]

The runflats are very tight and stiff. Make sure u take it to someone that deals with runflats, they are a b*tch to get off. Maybe a wheel/speed shop or there's always the dealer (?). Make sure they use the newer touchless machines, especially for the 20".

[motordavid]

Agree on finding a careful, knowledgeable tire/wheel joint...
most good ones use a Teflon 'slider' piece around the rim when they break the bead,
and repeat for install.

Balancing is critical, and they should use a 'limiter' on the air wrench. If they don't
hand torque the lug bolts at final tightening, do it yourself after a couple hundred miles.
A good joint will leave zero marks on your rims, use good weights, and torque to spec.
GL, mD

[rh71]

will torqueing to the wrong spec cause any vibration in the wheel at certain speeds? Or is that strictly a balance issue? Had it balanced multiple times, including road-force. Doesn't appear out-of-round when spun, but that's to the naked eye.

[motordavid]

Maybe, maybe not...if one GOOG's 'effect of improper wheel lug nut torque', you will see pages of pretty good articles/opins on the effect of under/over torquing...

Otoh, reading all that might make one wonder how older cars, with less careful techniques, ever rolled down the freakin road, lol!

There are even TSBs from other car manufacturers talking about braking shudder, etc., from improper torque.

My orig comment to the OP was simply to remind him that a good wheel joint can change tires w/out putting any marks on rims, and that proper wheel lug torque is important. I was not trying to crank his, or any one's paranoia. But, the guy cranking on the wheel lug bolts/nuts with his impact wrench may be the same guy gouging the crap out of one's wheels when changing tires...a good Joint is worth the hunt, imo.
GL, mD

[diesaroo]

Originally Posted by motordavid

Maybe, maybe not...if one GOOG's 'effect of improper wheel lug nut torque', you will see pages of pretty good articles/opins on the effect of under/over torquing...

Otoh, reading all that might make one wonder how older cars, with less careful techniques, ever rolled down the freakin road, lol!

There are even TSBs from other car manufacturers talking about braking shudder, etc., from improper torque.

My orig comment to the OP was simply to remind him that a good wheel joint can change tires w/out putting any marks on rims, and that proper wheel lug torque is important. I was not trying to crank his, or any one's paranoia. But, the guy cranking on the wheel lug bolts/nuts with his impact wrench may be the same guy gouging the crap out of one's wheels when changing tires...a good Joint is worth the hunt, imo.
GL, mD

Torque wrenches have been around a long time (circa 1918) so there has been no technological barrier to the use of them in the last hundred years or so.

Newer cars have made advancements in NVH which may make other things more noticeable. Also, the use of front disc brakes have not been prevalent until the last 25 years or so. This allows lug torque to affect braking performance to a higher degree than drum brakes.

As far as wheel lug torque is concerned, ideally they should all be to spec, but I think being consistent is more important than the actual number (within reason of course).

[motordavid]

I never suggested that the torque wrench was a new invention;I have seldom seen one used in a typical tire joint, after the guy cranks the lug nuts/bolts on with the air wrench...
that was my point to the OP.

[finagle69]

Be aware that a dealer may or may not have newer, safer equipment for mounting/de-mounting tires. Always ask about this first.

[kakalika]

Good quality equipment is the key to have tires changed without damaging your rims. Ask the shop if they have a Hunter tire machine. You could also try a shop that sells expensive huge flashy rims. They know the importance of not damaging rims during tire changes, and have good equipment.