The Boy Who Cried Wolf - Runflat Indicator

The Boy Who Cried Wolf - Runflat Indicator

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Discussion

vikingaero

Original Poster:

10,303 posts

169 months

Sunday 19th October 2014
quotequote all
Hit a large pothole, or drive in hot conditions and the RFI goes all spazzy. Probably had a dozen instances in the last year. Except last night at 10pm. RFI goes off, checks made using tyre pressure gauge, visual check as much as I can of the treads. This morning I check again and it's one borked tyre.

Thing is with runflats I have a spacesaver spare so could have used that. Next stop 4x normal tyres so that I can see when they are borked. The guys who specced runflats and RFI are tools. BMW/MINI you are tools. You're engineers and coke raddled marketing execs with little vision of reality and those of us who have lives and pay for our own cars/tyres/maintenance.

Wilmslowboy

4,208 posts

206 months

Sunday 19th October 2014
quotequote all
I might be completely wrong but I thought the RFI didn't actually work by measuring the pressure in the tyres (unlike TPMS fitted to some sports cars).

Instead they look for rotational difference (diameter changes) as a proxy for a pressure drop.

Therefore a whack on a pothole could cause a temporary false positive signal.