if it wasnt a punture or a problem with the valve?
Could it be down to how the tyre was sitting on the wheel. tyre was replaced a month ago. Problem only happened over last weekend.
I have standard 15 inch ford alloy wheel
2006-08-08 02:07:01 · 21 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
hitting speed bumps too fast, driving up kerbs and hitting deep pot holes and raised manhole covers all can cause pressure to be released round the rim of the wheel
2006-08-08 02:10:35 · answer #1 · answered by g8bvl 5 · 0⤊ 1⤋
It could be a porous wheel - cast aluminium alloy normally isn't air-tight, so needs a coating (enamel) to keep the air in the tyre. If the coating is damaged, the air can slowly escape through the wheel.
Alternatively it could be a "slow puncture" - a very small puncture that lets the air escape very slowly, and is difficult to find, but usually easy to repair.
If you suspect its how the tyre is sitting on the wheel, check the tyre sidewall for the the maximum allowed pressure, inflate the tyre to just less that that (to be safe) with the wheel off the ground which should seat the tyre properly on the rim, and then reduce the pressure to the normal for your car.
A good independent tyre fitters should be able to diagnose the problem easily, and will probably only charge for the repair (if they can), or recommend someone else who can fix it (if its a wheel that need re-enamelled).
2006-08-08 02:21:42 · answer #2 · answered by Neil 7 · 0⤊ 0⤋
The only reasons that a tire would lose pressure in a short period of time are a leak of some kind, or the air being manually released from the tire. You say there was no puncture, and no problem with the valve.
I have to assume that you had the tire checked in a water tank. The best way to check a tire for leaks is to fill it full of air and put it in a tank of water. any air leaking will show up as bubbles.
It could have a bad seal between the tire and rim, or you could have been the victim of a vandal or a practical joker letting the air out of your tire!
2006-08-08 02:14:59 · answer #3 · answered by fire4511 7 · 0⤊ 0⤋
The air is escaping because of a bad seat at the tire bead. The tire needs to be taken off and the wheel inspected. More than likely the wheel is corroded and pitted to the point that the bead will no longer seal. There is a possibility that bead sealer will fix the problem, but if not, the wheel will need to be replaced.
2006-08-08 02:16:10 · answer #4 · answered by jarhed 5 · 0⤊ 0⤋
The area where the tire seats on the rim or the bead is a place where tires can leak and alloy wheels are even known to leak right through the center of the wheel itself. There is a bead sealant available to repair this so you might have that checked.
2006-08-08 02:20:31 · answer #5 · answered by Iknowthisone 7 · 0⤊ 0⤋
Could be that the rim of the tyre has become displaced from the rim of the wheel. Get it checked at a local tyre dealer failing that has someone let the air out of your tyre as a prank???
2006-08-08 02:10:21 · answer #6 · answered by Valiant 3 · 0⤊ 0⤋
It must be leaking somewhere.
I know you say not a puncture or faulty valve (slow punctures don't always show up in the tanks).....
Could be it isn't bedded in quite right or you have a bit of grit or stone on the wheel rim. Could next door's holigan have let air out when you weren't looking?
Did you blow tyres up in warm weather and now it is cooler it looks like it has gone down???
2006-08-08 02:12:20 · answer #7 · answered by Storm Rider 4 · 0⤊ 0⤋
You could have a leak arround the bead or a bad valve stem. The place I deal with puts in new stems every time they change a tire. Although there is a chance the rim is dammaged but not likely.
2006-08-08 21:43:37 · answer #8 · answered by wzzrd 5 · 0⤊ 0⤋
It could be the air temperature. I don't know what the weather is like where you are but it is adviced to top up your tires in the winter as the air contracts. In hot temperatures it will expand.
If you had a spell or hot weather and then it cooled down it could explain why the pressure has gone down.
Just top it up and keep an eye on it! Happy motoring!
2006-08-08 02:12:50 · answer #9 · answered by Whitelord 2 · 0⤊ 0⤋
It's possible your wheel could be buckled so that the tyre is not sealing properly around the rim
2006-08-08 02:09:39 · answer #10 · answered by Stephen H 4 · 0⤊ 0⤋
it might be escaping around the rim.
The best way to find out is to mix up some washing up liquid and water (quite a bit of detergent in the mix) and paint it onto the tyre with a paintbrush, you will see bubbles where the air is escaping.
2006-08-08 02:10:56 · answer #11 · answered by Footy 3 · 0⤊ 0⤋