Front tyres losing pressure
Discussion
There is no visible reason as to why my front tyres lose 10psi a week but they do! No debris in the tread etc, the valves look ok, secure etc, is there a common reason why they could be losing pressure? I'll get them changed this weekend and assuming they can check and confirm there is nothing wrong with the rim, the problem should go away...
They are OEM 2007 Saab 93 6 spoke alloy wheels, i cant imagine they are anything special in terms of material
I'll try the bath suggestion if the general consensus is that a 10 psi a week loss would be fairly easy to spot with bubbles!
I dont go up kerbs a lot to be hoenst as it usually lives in the garage. Its a fairly nose heavy car so they could lose pressure when cornering but as its an estate mostly used for family duties i dont corner that hard and they lost pressure when sat in the garage for a week so I dont think thats a cause ... they are 225/45/17s
I'll try the bath suggestion if the general consensus is that a 10 psi a week loss would be fairly easy to spot with bubbles!
I dont go up kerbs a lot to be hoenst as it usually lives in the garage. Its a fairly nose heavy car so they could lose pressure when cornering but as its an estate mostly used for family duties i dont corner that hard and they lost pressure when sat in the garage for a week so I dont think thats a cause ... they are 225/45/17s
Edited by anonymous-user on Friday 24th July 09:26
I had the same on the RAV4 so got the tyres changed.
When they took the old ones off the wheels were really corroded around the bead line and the fitter said most of the pressure would have been lost through this.
A quick whizz round with a wire drill attachment and some new tyres and we've not had the problem again.
I could have all been the tyres but it might be worth visiting your local fitter to take the tyres off and check the wheels. My local place did it for free but I've used them for years.
When they took the old ones off the wheels were really corroded around the bead line and the fitter said most of the pressure would have been lost through this.
A quick whizz round with a wire drill attachment and some new tyres and we've not had the problem again.
I could have all been the tyres but it might be worth visiting your local fitter to take the tyres off and check the wheels. My local place did it for free but I've used them for years.
Assuming there's not a small nail or something in the tyres somewhere, no need to remove wheels usually. Rim clip balance weights cause more "porous" alloy wheels than poor quality wheels.
Few folks would have anything large enough to submerge a whole wheel in water.
I use a Mist Sprayer ( couple quid from Garden Centre ) with 5% Washing up liquid added to cover all the visible parts of the wheel. Pressure escaping between rim clip damaged rim and tyre bead is soon revealed. If no sign of that then the wheel off and spray other unseen side.
Like this. That damage to the paint on the rim edge is not caused by kerbing. The outline clearly is that of a hammered in rim-clip balance weight which often scratches into bare matal and with the passing of time, road filth and rainwater corrodes that exposed metal and the air seal in the tyre-rim interface is destroyed. :~
Few folks would have anything large enough to submerge a whole wheel in water.
I use a Mist Sprayer ( couple quid from Garden Centre ) with 5% Washing up liquid added to cover all the visible parts of the wheel. Pressure escaping between rim clip damaged rim and tyre bead is soon revealed. If no sign of that then the wheel off and spray other unseen side.
Like this. That damage to the paint on the rim edge is not caused by kerbing. The outline clearly is that of a hammered in rim-clip balance weight which often scratches into bare matal and with the passing of time, road filth and rainwater corrodes that exposed metal and the air seal in the tyre-rim interface is destroyed. :~
pablo said:
They are OEM 2007 Saab 93 6 spoke alloy wheels, i cant imagine they are anything special in terms of material
I'll try the bath suggestion if the general consensus is that a 10 psi a week loss would be fairly easy to spot with bubbles!
I dont go up kerbs a lot to be hoenst as it usually lives in the garage. Its a fairly nose heavy car so they could lose pressure when cornering but as its an estate mostly used for family duties i dont corner that hard and they lost pressure when sat in the garage for a week so I dont think thats a cause ... they are 225/45/17s
funny enough my car does this too *conspiracy*I'll try the bath suggestion if the general consensus is that a 10 psi a week loss would be fairly easy to spot with bubbles!
I dont go up kerbs a lot to be hoenst as it usually lives in the garage. Its a fairly nose heavy car so they could lose pressure when cornering but as its an estate mostly used for family duties i dont corner that hard and they lost pressure when sat in the garage for a week so I dont think thats a cause ... they are 225/45/17s
Edited by pablo on Friday 24th July 09:26
toasty said:
I had the same on the RAV4 so got the tyres changed.
When they took the old ones off the wheels were really corroded around the bead line and the fitter said most of the pressure would have been lost through this.
A quick whizz round with a wire drill attachment and some new tyres and we've not had the problem again.
I could have all been the tyres but it might be worth visiting your local fitter to take the tyres off and check the wheels. My local place did it for free but I've used them for years.
Had exactly this experience When they took the old ones off the wheels were really corroded around the bead line and the fitter said most of the pressure would have been lost through this.
A quick whizz round with a wire drill attachment and some new tyres and we've not had the problem again.
I could have all been the tyres but it might be worth visiting your local fitter to take the tyres off and check the wheels. My local place did it for free but I've used them for years.
Gassing Station | Suspension, Brakes & Tyres | Top of Page | What's New | My Stuff