03-15-2011, 02:55 AM | #1 |
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Replace 18" TPM rims with 17" NON-TPM
Hello everyone ... after some research I'm trying to resolve some doubt about purchasing a new set of snow tires + rims (304) that I would like to get on my new X3: the standard car is fitted with 308 rims (with tire pressure monitor - TPM) and runflat tires, can I mount NON runflat winter tires on 17" rims (304) WITHOUT TPM, or the iDrive signals the failure? Can I temporarily disable the sensor (up to replacement of summer tires in spring)?
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03-16-2011, 06:02 AM | #3 |
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The new X3 doesn't use a sensor for TPM.
It uses the ABS system's wheel RPM monitor to detect flat tires. So any rim that fits onto the wheels should do, I think. Just be sure to recalibrate it in iDrive when you swap the tires. |
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03-16-2011, 07:35 AM | #4 | |
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Quote:
"The system must have been reset when the inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Always use wheels with TPM electronics to ensure that the system will operate properly." and "The system does not operate correctly if it has not been reset. For example, a flat tire may be indicated despite correct tire inflation pressures. The system is inactive and cannot indicate a flat tire: ▷ For a mounted wheel without TPM electronics. ▷ When the TPM is disturbed by other systems or devices with the same radio frequency." |
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03-16-2011, 07:42 AM | #5 | |
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Quote:
My X3 (USA production) definitely has TPM sensors in the wheels. They are at a different frequency than the pre-2010 TPM sensors. This from a forum member who found the "old" (pre-2010) sensors would not work and had to have his winter tires removed, the new sensors switched, and the tires re-mounted. The iDrive interface, at least at the "customer access" level does not allow turning off the TPM warning, so using wheels without functioning TPM sensors will give a "tire pressure fault" warning. It's possible that a dealer may have access to software tools that could override that, but unlikely a dealer would risk the liability of doing so if a customer requested it. Last edited by Lotus7; 03-16-2011 at 07:50 AM.. |
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