Changing tires on 20" BBS without damage?
#1
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My trusty Dallas/Fort Worth Texas area Tire Rack installer damaged the trim ring on my XKR's 20" Perseus BBS and has sent the entire wheel to BBS in Georgia for trim replacement. He is not interested in mounting the other 3 tires due to the risk. I cannot find a shop that has a touchless tire machine in the North Texas area, but I know that someone in the area has to be capable of this task. Is anyone familiar with a shop in the Dallas area who can properly mount tires on this wheel?
Thanks,
Moseley
Thanks,
Moseley
#2
![Default](/forum/images/icons/icon1.gif)
My trusty Dallas/Fort Worth Texas area Tire Rack installer damaged the trim ring on my XKR's 20" Perseus BBS and has sent the entire wheel to BBS in Georgia for trim replacement. He is not interested in mounting the other 3 tires due to the risk. I cannot find a shop that has a touchless tire machine in the North Texas area, but I know that someone in the area has to be capable of this task. Is anyone familiar with a shop in the Dallas area who can properly mount tires on this wheel?
Thanks,
Moseley
Thanks,
Moseley
#3
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I had the tyres changed on my 2005 XK8 4.2-S Sepang split rims without any issues and subsequently had one removed and replaced again for a puncture repair, again without any damage to the trim rings.
![Changing tires on 20" BBS without damage?-dsc_0072.jpg](https://www.jaguarforums.com/forum/attachments/xk8-xkr-x100-17/86795d1480972775t-changing-tires-20-bbs-without-damage-dsc_0072.jpg)
Each time a standard bead breaker machine was used. The damage to your Perseus has to be down to the operator not understanding how thin the chrome trim rings are and avoiding putting any pressure on them when pulling the bead over the rim.
Graham
![Changing tires on 20" BBS without damage?-dsc_0072.jpg](https://www.jaguarforums.com/forum/attachments/xk8-xkr-x100-17/86795d1480972775t-changing-tires-20-bbs-without-damage-dsc_0072.jpg)
Each time a standard bead breaker machine was used. The damage to your Perseus has to be down to the operator not understanding how thin the chrome trim rings are and avoiding putting any pressure on them when pulling the bead over the rim.
Graham
#4
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Hi, not really an expert, but since I successfully changed my tires on the 20" BBS rims without damage, here is my advice:
Damage is basically unavoidable if you put these rims in the tire changing machine the normal way. i.e the machine holds the rim by expanding the holders inside, basically where when mounted the brake disk would be.
Instead you are supposed to press the pedal for expanding the holders before putting the rim on the machine, causing them to expand to the maximal position. then you put in the rim, but upside down. (i.e. the hollow space for the brake disk is facing you). Then you press the pedal and the machine holds the rim from outside.
so the whole trick is that the tire doesn't go over the trim ring, because it is put on from the other side.
NOTE: I'm not sure every tire changing machine can do this, the one I used was clearly capable of it and one could tell by the shape of the holders.
Update: found a video of someone changing the tire this way (i.e. putting it on from the other side):
Damage is basically unavoidable if you put these rims in the tire changing machine the normal way. i.e the machine holds the rim by expanding the holders inside, basically where when mounted the brake disk would be.
Instead you are supposed to press the pedal for expanding the holders before putting the rim on the machine, causing them to expand to the maximal position. then you put in the rim, but upside down. (i.e. the hollow space for the brake disk is facing you). Then you press the pedal and the machine holds the rim from outside.
so the whole trick is that the tire doesn't go over the trim ring, because it is put on from the other side.
NOTE: I'm not sure every tire changing machine can do this, the one I used was clearly capable of it and one could tell by the shape of the holders.
Update: found a video of someone changing the tire this way (i.e. putting it on from the other side):
Last edited by shl1980; 06-04-2014 at 07:37 AM.
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