Tyre pressures for comfort

[macp]

Morning all

I checked the pressures this morning on my A3 2.0 TDI Sport with 225/45/17 and the fronts were about 25psi and 24psi on the rears. I checked the fuel flap and increased the fronts to 30 and the rears to 29. The ride is a good bit firmer now but to be honest I preferred the ride with the pressures as they were. The car rode a lot softer and the steering didnt feel any less direct but by running under the recommended pressures I assume this effects fuel economy but what about tyre wear etc ?

Thanks all.

[JonnyFive]

Tyres will wear on the outer edges quicker than the middle.

[macp]

JonnyFive said:

Tyres will wear on the outer edges quicker than the middle.

Thanks I guess that makes sense.

[Dodsy]

Try something in between. My jag has two pressures 'sport' at iirc 32 and 'comfort' at 30 . Cant say it makes a massive difference but i run them on the lower pressure to try and soften some of the bumps as the tyres are very low profile

[collateral]

The trend for firm suspension and large wheels makes most modern cars ride pretty horribly ime

I wouldn't worry too much about decreasing by a couple of psi. I reckon how you drive it will have more effect on wear than running pressures a little lower than recommended

[HustleRussell]

Bear in mind it might be costing you a fair bit in fuel economy.

[collateral]

Dodsy said:

Try something in between. My jag has two pressures 'sport' at iirc 32 and 'comfort' at 30 . Cant say it makes a massive difference but i run them on the lower pressure to try and soften some of the bumps as the tyres are very low profile

My manual quotes a pressure for regular driving and one for when 'driving for long periods above 100 mph'

[ging84]

i would never under inflate my tyres
the grip of a tyre goes down fairly gradually for every psi you over inflate your tyres
but when you under inflate them you can find the grip level starts to drop off a cliff just a few psi below the recommended pressure