what causes slow punctures?

Matt82 · 21 Aug 2006 at 23:05

as above really.

every car i have seems to have one slow puncture or two.

what causes these?

spaz · 21 Aug 2006 at 23:07

Damaged wheel/tyre, not a proper fit to the wheel, but air can also permeate the rubber over time, but this tends to be very slow.

JRS · 21 Aug 2006 at 23:10

Matt82 said:
what causes these?

Uh.....

Damaged tyres? Damaged or porous wheels? Not likely to be anything else is it? Unless the area you live in is infested by air-stealing pixies who go around taking bits of air out of car tyres....

Rich · 21 Aug 2006 at 23:24

A small hole in your tyre.

Bri · 21 Aug 2006 at 23:25

Could be a dodgy valve as well.

siztenboots · 22 Aug 2006 at 09:30

Yep, Grit or rust on the rims, general crud in the valves .

Worth taking wheel off and inspecting it in a bowl of soapy water.

bitslice · 22 Aug 2006 at 09:34

maybe you've got old alloys ?

I've had air bleed out from the rims on all of them.

Matt82 · 22 Aug 2006 at 19:45

it bugs the hell out of me. i think the last 5-6 cars ive had have each had at least one slow puncture. i only got the BBSs for the golf last week, put the correct air in them and a week later the handling feels off. i check the pressures, the NSF has lost 4LB...

my sister hardly looks after her boxster at all. i saw it for the first time in about a year this weekend. checked the pressures for her, they were still perfect

jpmonkey69 · 23 Aug 2006 at 15:16

sometimes tyre places put lead balancing weights on alloy wheels. They shouldn't really because it corrodes the alloy which can cause a slow puncture. They should use stickers.