18" tyre pressures?

[lmt]

Just a quick question

What pressure does everyone run on they 18"?

i running

S03 @ 225/35/R18 at 38psi
S03 @ 255/35/R18 at 42psi

I was just wondering what people are running with they 18"

Cheers

[mj]

38,42 should be around 30,32.

[alan wheeldon]

32psi for the 225 but i dont know about the 255?

[Al-sw20]

Sounds about right for that low profile 18" tyre.

I run 40psi rear and 38psi front on my 235/40R17s and 205/40R17s

[craigodlin]

I'm running 18" wheels with 225/35 front and 225/45 rear. What pressure do you guys think I should be putting in them. Local tyr place said 30psi front and 29psi rear.

Also, am i running good size tyres for the car/wheels??

[galvanics]

i run 28 psi rear 255/35/18

[Lewis Jay]

I run mine on this, seems o.k

Toyo T-1S

225/35/18 Front 28 PSI

245/35/18 Rears 30 PSI

Cheers, Lewis.

[tubby_tony]

Std tyre pressures + 2psi for each inch of oversize that would make it 29+6= 35psi front, 32+6= 38psi rears.

[Stu Wilson]

Why should they need more pressure than standard?

Can't think of a valid reason.

[Andy F]

Why should they need more pressure than standard?

Can't think of a valid reason.

Me neither Stu.............which is the heaviest a ton of coal or a ton of feathers, if you know what i mean

[jonb-]

Why should they need more pressure than standard?

Can't think of a valid reason.

Me neither Stu.............which is the heaviest a ton of coal or a ton of feathers, if you know what i mean

Coal!!

I run 30 front 33 rear in my 18s.

[Andy F]

Why should they need more pressure than standard?

Can't think of a valid reason.

Me neither Stu.............which is the heaviest a ton of coal or a ton of feathers, if you know what i mean

Coal!!

Yer.............theres alot more feathers but it still weigh's a 1 Ton

[thai boxer]

I run 30psi all round on my 215/35/18 and 225/35/18.

[Al-sw20]

Local tyr place said 30psi front and 29psi rear.

Your local tyre place is either inept or doesn't realise the engine/driving wheels on an mr2 are in the rear. You need more pressure in the rear tyres on an mr2.

[craigodlin]

so I definitely need to put more air in mine then! won't be using that tyre place again! what a donkey!

[salim]

I think my drive shafts have recently gone on my front wheel and I think this is due to having 18's.

Can someone tell me if this is true? and what would be the best way from stopping this happening too often if it is due to the weight of the 18's

[jonb-]

Heavier wheels will put more strain on the hubs, as will spacers and wheels with smaller offsets.

If you've managed to damage a front drive shaft i'll be well impressed. Likely you've just ruining the hub bearings and will need a new set pressed in.