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  • 3 weeks later...

Definately 245/35R19 to keep the correct outer diameter. 245 on a 9.5 looks just right IMO too. Not muffin topping and ever so slightly stretched. That's if it's an R33 or R34. R32's have a different outer diameter. 255/30R19 would be right for an R32.

Edited by bradsm87
265's

the very slight stretch makes them look pretty good i think

There isn't gonna be ANY stretch with a 265 tyre on a 9.5" rim.....

When it comes to comparing physical tyre widths between brands, there isnt really any way to say exactly how wide they will be without actually getting out your tape measure and measuring the sectional width of the tyre.

There is no exact common rule that all tyre manufacturers stick to when it comes to how wide tyres have to be.

Tyre widths (such as 235, 245, 255 etc.) are only comparable within each individual brand... I have seen two tyres of exactly the same size (275/30R19) in two different brands that were almost an inch different in width.

If you are really concerned about the physical width of your next set of tyres then your best bet is to find out which brand and model of tyre you want, then go to some local tyre shops and ask if they have them in stock so that you can get the actual width.

As for the overall diameter of the tyres - find out the original size that the GTR came out of the factory with, work out the diameter in mm (there are sites on the net that will calculate it for you) then try to get as close to this as possible with the new 19" tyres, for example:

---- 245/45R17 = approx 652mm diameter

---- 245/35R19 = approx 654mm diameter

---- difference = 2mm.

Hope this helps :)

When it comes to comparing physical tyre widths between brands, there isnt really any way to say exactly how wide they will be without actually getting out your tape measure and measuring the sectional width of the tyre.

There is no exact common rule that all tyre manufacturers stick to when it comes to how wide tyres have to be.

Tyre widths (such as 235, 245, 255 etc.) are only comparable within each individual brand... I have seen two tyres of exactly the same size (275/30R19) in two different brands that were almost an inch different in width.

If you are really concerned about the physical width of your next set of tyres then your best bet is to find out which brand and model of tyre you want, then go to some local tyre shops and ask if they have them in stock so that you can get the actual width.

As for the overall diameter of the tyres - find out the original size that the GTR came out of the factory with, work out the diameter in mm (there are sites on the net that will calculate it for you) then try to get as close to this as possible with the new 19" tyres, for example:

---- 245/45R17 = approx 652mm diameter

---- 245/35R19 = approx 654mm diameter

---- difference = 2mm.

Hope this helps :D

This help thanks heaps mate

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