Tyre sizes?

[trotter]

ok i'm at a loss how do companies work out tyre sizes? i want some 31" or 32" rubber to go on my new wheels but on tyres monkey site all the insa range are listed as 195 or 215 or 235 etc is there a easy way to work this out to compare it etc

cheers

mister (feeling stupid) trotter

[ScottieJ]

Here's a little tyre chart boyo, stolen but added to

Common tyre sizes for 15" wheels

205/70/R15 (26"x 8.1") min rim 5 inch 'optimum' rim 5.5 inch maximum rim width 7 inch
195/80/R15 (27"x 7.68" min rim 5 inch 'optimum' rim 5.5 inch maximum rim width 7 inch
205/75R15 (27.1"x 8.1")min rim 5 inch 'optimum' rim 5.5 inch maximum rim width 7 inch
215/75 R15 (28" x 8.5") min rim 5 inch 'optimum' rim 5.5 inch maximum rim width 7 inch
225/75R15 (28.3"x 8.9") min rim 6 inch optimum rim 6.0 inch maximum rim width 7.5 inch
235/75R15 (28.9"x 9.3")min rim 6 inch optimum rim 6.5 inch maximum rim width 8 inch
245/75r15 (29"x9.65")
265/75R15 (30.6"x 10.4")min rim 7 inch optimum rim 7.5 inch maximum rim width 8.5 inch

31x10.50R15 min rim 7 inch optimum rim 8.5 inch maximum rim width 9 inch
33x11.50R15 min rim 8 inch optimum rim 9.0 inch maximum rim width 10 inch
33 & 35x 12.50R15 min rim 8.5 inch optimum rim 10 inch maximum rim width 11 inch

Common tyre sizes for 16" wheels
245/75r16 (30"x9.65")
275/70r16 (31"x10.83")
235/85r16 (32"x9.25")
265/75r16 (32"x10.43")
255/85r16 (33"x10.04")
285/75r16 (33"x11.2")
305/70r16 (33"x12.01")
315/75r16 (35"x12.4")


Should give a rough idea! if not here's a link to a tyre size calculator http://www.onlineconversion.com/tire_si ... ersion.htm

and a new one
http://tire-size-conversion.com/tire-size-calculator/

Scottie

[urbanzook]

check this out duz it all for ya. easy
DML TIRE AND WHEEL CALCULATOR
http://www.dakota-truck.net/TIRECALC/tirecalc.html

[trotter]

nice one guys cheers

[Cyprus Geoff]

That looks familiar Scottie

[Plunkett]

Hi there Guys, new on here but was hoping someone could help me...looking to buy some new wheels for my vitara jlx....i quiet like a look of a pair on ebay( http://www.ebay.co.uk/itm/Suzuki-Grand- ... 2c7458b91e ) was wondering would they fit my normal Vitara with them being grand vitara wheels and also would they be to big as my vitara is standard with no modifications. thanks guys x

[ROBBIE]

I would say too big for a standard vit

[ScottieJ]

I'm pretty sure 235/75r15 are a squeeze on a standard vit and those work out around 1" bigger.

[Rodden87]

Had 235/75/15 on a standard for few weeks, insa turbo Sahara. They rubbed like fooooook don't do it. Mine rubbed against chassis leg on lock and got little to no flex on the back and with front anti roll bar removed they rubbed over every bump under steering!

[kiwizook]

I've got 600/16 tyres on my wagon at the mo,ment, this was the original size it had. what's the metric equivalant of this?