31/71 18, What Size Are These Slicks In Normal Language...example, 225/40/18

[allthewaytotheskyline]

as topic says im in dire need of your knowledge as tyres as enw to me.

thanks in advance.

[Duncan]

310 wide

710 high

18" wheel

so they are damn big. off a porsche cup car or something?

18" wheel is 450mm so tyre is (710-450)/2 per side =130mm. 130/310 gives .40 aspect ratio. So 310/40/18 is about right.

Standard on a gtr was 225/50/17 which is 660mm high.

[JMW]

Depends, if it in inches it 31 inches tall and 71 inch circumfrence. Most companies with will give you height and rolling diameter as the affects diff gearing.

[allthewaytotheskyline]

definately wont fit on my r34 gtt then right?

[Duncan]

nope...them are real big. Unless you've got 12" wide wheels and big flares

[allthewaytotheskyline]

dayum...ok well whats the widest i could go on r34 gtt?

[JDMPWR]

i think it depends on the rim and offset.

I have a 34 GT-T .. running CE28N's +34 offset.. and i have 275-35-r18

[nisskid]

Standard on a gtr was 225/50/17 which is 660mm high.

what GTR was that?

[nisskid]

dayum...ok well whats the widest i could go on r34 gtt?

worry about buying a decent tyre first, better off with a better thinner tyre, than a worse wider tyre. understanding im judging a book by its cover, but going by ur avatar ur car doesnt look like it needs anything over 300mm wide.

[allthewaytotheskyline]

worry about buying a decent tyre first, better off with a better thinner tyre, than a worse wider tyre. understanding im judging a book by its cover, but going by ur avatar ur car doesnt look like it needs anything over 300mm wide.

300mm wide is what in regular size?

[Duncan]

ahh yes the only one I pay attention to, 32 vspec. on 17x8" rims

[nisskid]

300mm wide is what in regular size?

it's 300 lol

[nisskid]

ahh yes the only one I pay attention to, 32 vspec. on 17x8" rims

yeh my bad, had a mental blank, was thinking the V-spec's were still 16x8's just in the different design.