New shoes

H

Herminator

Senior member
 Edinburgh
I had some new tyres fitted on Tuesday, Goodyear F1 Assyemmetrics all round so no more Bridgestone run flats.

I'm just wondering a couple of things. What tyre pressures should I be using? should they be slightly different from the standard run flat pressures? The tyre fitters put them at 34/36, front/rear, which seemed to be a guestimate.

I also noticed imediatly after driving off with them newly fitted, the steering feels a bit light around the center point. It's not like there's play, the wheels still turn that tiny fraction in accordance to the steering wheel, it's just a bit light. I'm not sure if it was there before I changed the tyres or not, I get the feeling I'm being overly cautious but could it be the fact the tyres are new and have a lot more tread to move around on and are still getting rid of the releasing agents? I've done about 200 miles on them now.

The tyre pressure warning light of course came on when I first drove away on the new tyres, the first time I tried to reset it, it just came back on imediatly. I then tried holding down the button for longer but it just went back to the red warning light. I tried again a little later and it seems to have reset properly now. I assume it was just getting used to the new diameter of the tyres.

I have a 12v pump in the boot now and picked up a can of tyre weld whilst at the fitters, they ended up giving it to me for free :thumbsup: but then I suppose after spending £560 on new tyres it's worth the gesture to try and get me to come back for the next set. I was there about 1.5 hours whilst they fitted the darn things :tumbleweed: on one of the warmest days we've had in weeks, I don't think the guy doing it was enjoying manhandling the 18" wheels and tyres :P
 
Recommended tire pressures should be labeled on the the driver's side door sill. My //M lists 30f/30r psi, not sure if it is the same on yours. 34/36 is high in either case, and I would lower slowly to see what is comfortable for you. :)
 
33/36 is the OEM spec for non M. I also drive on Eagle F1's and go with the factory recommended inflation. Best handling and balance but just as important, this will maintain most even wear possible (as long as you run OEM alignment specs)
 
powerontap said:
33/36 is the OEM spec for non M. I also drive on Eagle F1's and go with the factory recommended inflation. Best handling and balance but just as important, this will maintain most even wear possible (as long as you run OEM alignment specs)
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So the front needs to come down just a fraction then. I'll check them this weekend when giving it a wash, it's completely filthy at the moment :oops:
 
Regarding the steering being lighter with the new tyres, you always find that! Going from worn tyres with very little give in the tread blocks to new ones with more give, if that makes sense.

Definateyl nothing to worrk about.

I run my tyres slightly harder than the standard pressures, you can adjust the pressure to change the feel of the car. I think I run mine a couple of PSI up on the front.

J.
 
Did you have an alignment done at the same time? If so they normally take alot of the camber out of the setup and the cars will become a bit more twichy, however you will get better tire wear. I'm on my third set on non-runflats. I have been running 36 in front and 40 in the rears. I also have the staggered tire setup. Enjoy the new shoes. :thumbsup:
 
The asymmetrics have pretty stiff side-wall so one benefit is you don't have to run high pressure to get performance out of them. For the street, go with 32~34PSI ALL AROUND when the tires are cold. For more aggressive driving, go with 35~37PSI all around - again measure when the tires are cold.
 
Anyone found a UK supplier for R19 F1s? Can only get fronts though looking at the Goodyear website they do make the right size for rear Alpina Dynamics.
 
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