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I run mine at 3bar cold. 3.2bar when i get home after my commute. Which is what, 43psi? Think the fronts look like there bulging when using even 2.8, the factory reccomended looks like im running with four flat tyres.
Quote from: xiziz on May 11, 2016, 11:33:47I run mine at 3bar cold. 3.2bar when i get home after my commute. Which is what, 43psi? Think the fronts look like there bulging when using even 2.8, the factory reccomended looks like im running with four flat tyres.Factory placard standard recommendation should be 32 psi on mine though 38 psi is what I like to run with the 18's, the tyre shop who fitted mine had them all on 44 psi which is probably fine but very hard to ride on.
Radials are supposed to bulge.
Quote from: Surferdude on May 11, 2016, 12:00:08Radials are supposed to bulge.I must have really big radial undies then.
Quote from: Doggie 1 on May 11, 2016, 12:10:00Quote from: Surferdude on May 11, 2016, 12:00:08Radials are supposed to bulge.I must have really big radial undies then. In which case you've used too much compressed air.
Quote from: CraigB on May 11, 2016, 12:02:09If they're 225/40R18, then 43 or 44 is correct.
Quote from: Surferdude on May 11, 2016, 12:08:21Quote from: CraigB on May 11, 2016, 12:02:09If they're 225/40R18, then 43 or 44 is correct.I shall return them back to that pressure then on your advice Trev they felt like driving on the Flintstone wheels though
Quote from: CraigB on May 11, 2016, 12:16:27Quote from: Surferdude on May 11, 2016, 12:08:21Quote from: CraigB on May 11, 2016, 12:02:09If they're 225/40R18, then 43 or 44 is correct.I shall return them back to that pressure then on your advice Trev they felt like driving on the Flintstone wheels though No. Sorry. I've mislead you. Those are the maximum allowable pressures for that size. I thought you were happy at that pressure. If you're running them down in the high 30s, that's fine. Personally, with your car, id be happy at 38psi max.
^Wow. A bit more than the AT&RA Manual says.
Quote from: Surferdude on May 11, 2016, 12:12:04Quote from: Doggie 1 on May 11, 2016, 12:10:00Quote from: Surferdude on May 11, 2016, 12:00:08Radials are supposed to bulge.I must have really big radial undies then. In which case you've used too much compressed air. Trust me, my air isn't compressed!
Radials are supposed to bulge. Their design is intended that way to maintain the correct footprint on the road. If you inflate them to the point where there is no bulge, you are removing most of the flexibility from the sidewalls which negates the benefits of having radial tyres.
Quote from: Surferdude on May 11, 2016, 12:00:08Radials are supposed to bulge. Their design is intended that way to maintain the correct footprint on the road. If you inflate them to the point where there is no bulge, you are removing most of the flexibility from the sidewalls which negates the benefits of having radial tyres.Interesting, I just looked at the max(3.5bar), and dropped it down a bit after some quick research I found that a lot of people seem to prefer using a high pressure around here, lots of cornering. Summers are 205/55/R16 91H and the winters are 195/65/R15 91T. 2.2bar(32psi) is recommended. I think I'll try and drop them down a bit after sundown, got 250km driving tomorrow to test it out on. What would you put them at? Edit: Put 2.6(~38psi) front and 2.4(~35psi) rear.
Quote from: Surferdude on May 11, 2016, 12:55:29^Wow. A bit more than the AT&RA Manual says.I suppose being 92W and extra load rated they're a bit higher
What would you put them at? Edit: Put 2.6(~38psi) front and 2.4(~35psi) rear.
Incidentally Gonz, you have a diesel and I'd agree with the 40 psi, at least in the front, for the heavier engine.The OP hasn't given car details and I maybe wrongly, assumed petrol.
Quote from: Surferdude on May 11, 2016, 12:03:23Incidentally Gonz, you have a diesel and I'd agree with the 40 psi, at least in the front, for the heavier engine.The OP hasn't given car details and I maybe wrongly, assumed petrol.Should be showing in my signature thing? No worries as no harm done. 1.6 diesel, should I top the front 2 up to 38psi in that case?