Tyre pressures

[Simon13]

Another quickie!

Whats the recommended pressures for 15 inch BBS?
And 16 inch Alpina's?
Apart from going by the rating written on the tyre, as front and rear are different on 325's?!

Thanks

[XMon]

Another quickie!

Whats the recommended pressures for 15 inch BBS?
And 16 inch Alpina's?
Apart from going by the rating written on the tyre, as front and rear are different on 325's?!

Thanks

Weill if you mean tIre pressures, then I run 32psi front and 33-34psi rear for 205/55-15s on the iXes

Can't help ya on the 16's as I've never run that size....

[MONSPORT42]

I Have Alpina 16s - 7" front and 8" rear - running on Pzeros, 50 profile front & 45 profile rear. Tyre pressures 2.1 bar front, 2 bar rear. Quite a few of us on the zone run the rears at lower pressure than front. Good combination for handling, comfort and quietness.

[6potWil6pot]

I used to run 28psi all round on my E30s, i wanted the ride quality up ( )
Now on this one with the new Toyos im currently on 36psi fronts and 34psi rears, the ride is a bit worse but the handling is a bit sharper, no doubt i'll experiment with the pressures in time.

[Demlotcrew]

36 and 34 is too high, the centre will wear quick.

Andrew

[6potWil6pot]

I think it'll be fine for now

[Demlotcrew]

I think it'll be fine for now

Well you think as long as it takes.

[6potWil6pot]

Oh no your right, the extra 2 psi overs gonna wear my expensive tyres to dust! Gonna go let some air out my tyre RIGHT NOW

[Simon13]

monsport whats 2 bar in psi?

[MONSPORT42]

Hi Simon, 1 Bar = 14 point something psi. I'll search for the exact fig and post it if no one else comes in with the answer.
Malcolm

[BadDave]

Hi Simon, 1 Bar = 14 point something psi. I'll search for the exact fig and post it if no one else comes in with the answer.
Malcolm

I bar atmospheric pressure equals 14.7 psi

[MONSPORT42]

Thanks Dave, saved me the job - been being domestic all day!

[BadDave]

been being domestic all day!

The following image just popped into my head
French maids outfit/feather duster and a pr of Marigolds
lol

[MONSPORT42]

The following image just popped into my head
French maids outfit/feather duster and a pr of Marigolds


Hold that thought!
Alas, I was in the garage jigsawing and gluing MDF to make a fire surround.
Might spray it Diamond Black tho'.

[BadDave]

Alas, I was in the garage jigsawing and gluing MDF to make a fire surround.
Might spray it Diamond Black tho'.

Just remenber to use intumiscent(fire retardant) paint.
Wouldn't want all that hard work going up in flames. [/quote]

[MONSPORT42]

It's only going to be dummy focal point for a boring room, so there'll be no actual fire, but thanks for the tip. 'Intumiscent' - I'll have to remember that one!

[Ziggy]

Doesn't intumescent mean that the paint'd react with the fire? As in good for a fire door, where it only need to work once, but not great for a fire surround, where it'd look cr@p after the first time you used it?

[Simon13]

so rounding up from my calculations these are roughly!

31 psi front and 29 rears

Thanks monsport my wheels are exactly the same bar i have F1's as tyres on the back

[billgatese30]

sainsburys is free to top up air and there machines are supposed ot be most accurate, more accurate than most gauges to buy aswell. might go there tomorrow night after work, only prob is the tires will be warm

[Karan]

i run 40psi front and rear

Karan

[MONSPORT42]

Hi Simon, no probs. Let us know what you think with those pressures.

Karan - 40psi - wow don't you find the ride skittish? I know it depends on the rest of the set up. I did try that sort of pressure on track once but ended up with less grip and more wear/less effective brakes. Each to his own but can't help thinking it must be like riding on 4 bricks!!

[topspark]

1 Bar atmospheric =14.695 psi
1 bar =14.503 psi

lee

[Karan]

i think u r right, i will try some more sane pressures

Karan

[MONSPORT42]

Hi Karan, Be interested to hear what you find best for you. All adds to the data bank! I was advised by UnixNerd up in bonny Scotland to try lower pressures - actually 2 and 1.8 bar but I upped them to 2.2 and 2 when I changed my wheels and tyres and that's just what suits me.

[Karan]

i like my car to slide around at the back a lot hence my high rear pressure, will lower the front though.

[Simon13]

what is your exact suspension set up Karan? H&R cup, poly axle bushes and the rest standard?

[Karan]

yep plus m3 tca bushes and top mounts, increase camber and castor at front.