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Don't replace those 'cheesy' plastic wheel stem caps!!!!!!!!. they are designed to blow out in case of a major pothole, failure of the valve, instead of the tire blowing thru the side wall. BEWARE
Don't replace those 'cheesy' plastic wheel stem caps!!!!!!!!. they are designed to blow out in case of a major pothole, failure of the valve, instead of the tire blowing thru the side wall. BEWARE
Don't replace those 'cheesy' plastic wheel stem caps!!!!!!!!. they are designed to blow out in case of a major pothole, failure of the valve, instead of the tire blowing thru the side wall. BEWARE
Don't replace those 'cheesy' plastic wheel stem caps!!!!!!!!. they are designed to blow out in case of a major pothole, failure of the valve, instead of the tire blowing thru the side wall. BEWARE
jagular
Veteran Member 1991 Alfa Romeo 164 My Garage | Join Date: Nov 2008 Location: Calgary Alberta Canada Posts: 1,517 Thanks: 41 Thanked 115 Times in 113 Posts |
(But since experts here insist, it must be just 'nonsense')
Jerry, do you recommend a set of chrome or bakelite caps? Amazon?
Yeah, I'm not buying that one.
Unfortunately ..someone here already experienced that exact issue and the tire was DOA
I always thought metal caps were a no-no in an environment with salt on the roads. Disimilar metals (metal valve stem + metal cap) doused with a salty aqueous solution (salty winter road slush) creates galvanic corrosion. Not enough to charge the car, but enough to create a mess of the caps that may become difficult to remove.
Acura once sent me replacement plastic caps to exchange for the stock metal ones for this exact reason.
Absolutely yes, reference is my Jaguar dealer and our forums. my XF supercharged has those plastic caps, and on the Jag forum it was discussed at length by the technicians who explains the mechanics of these failures on super low profile tires.
Also, the plastic caps should not be too tight on the stems.
(But since experts here insist, it must be just 'nonsense')
Here below is some of that Jaguar forum thread:
jagular
Veteran Member
1991 Alfa Romeo 164
My Garage
Join Date: Nov 2008
Location: Calgary Alberta Canada
Posts: 1,517
Thanks: 41
Thanked 115 Times in 113 Posts
There have been a number of reports of failure of the TPMS valve stem. Jaguar warns against use of metal valve caps. If you use metal valve caps there is a serious risk the valve stem will fracture at the point on the stem where the cap ends, the valve body flies out andvthe tire pressure goes to zero extremely quickly as if for a blow out.
Did you have metal valve caps by any chance?
Although the tires are not warranted by Jaguar the TPMS is. There is no way the TPMS should part company with the rim as the valve stem secures it. Is the valve stem still there?
__________________
09 Azure XF Lux, dove grey interior
I choose to live and learn
From what I can gather the problem with metal valve stem caps is due to dis-similar metals bonding to each other, causing the valve stem to break when the cap is removed. I did find some caps which claim to be safe for TPMS sensors:
http://www.amazon.com/gp/product/B00959M7R6/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1