Brompton tyres don't stay at high pressure for long

[mitchibob]

Schwalbe tubes have been best for me so far, with schrader valves. Only lose about 5-10psi a week. Just have a track pump to keep tyres at 90-95psi weekly. I do prefer to patch my tubes rather than just replace though.

 

[Bodhbh]

If you've got removable valve cores, get some Stans sealant and add to the inners thru the valve. I imagine a small bottle will be plenty for a couple of Brompton inners. Sounds pretty normal that your tires need some air every couple of weeks tho!.

 

[mitchibob]

Unless you've gone through weeks of hand therapy with various grades of silly putty, in and out of the fridge and freezer, just squeezing your tyres doesn't give a good indication of pressure. Even after that, my marathons still feel hard at 70psi, but wont be as nice as when they're loser to 95psi. The lesser rattling of the rear mud guard is also a decent indication that I need more air in the tyres, not just that they start to feel like riding through treacle. I think I might just have to rip that mud guard out.