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Tyre size

younglion

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is a 19" rim and tyre 235/40/19 physically bigger/wider than a 18" 235/40/18
 

shiftySLE

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yes, by 1 inch in diameter, the width depends on what widthe the wheels are, that tyre will fit on probably anything from 7-9 inch wide
 

Scooter79

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A 235 tyre on a 7" rim? I'd hate to see that.

Use this link if you want to compare tyre sizes Tire size calculator
 

shiftySLE

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not real smart idea but i've seen it, maybe I should have started with 8 inch. BTW whats the tyre size calculator for, the wheel is one inch bigger and the tyre size is the same except one inch bigger
 

shiftySLE

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NO it is the the same outside diametre spot on!! it's perfect when compared to the stock 15's.

AND will not affect your speed

????? How is it the same diameter outside, one wheel is 18" and the other is 19", and 15", where di that come into it.
 

M01ST

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Mate had 18 inch rims 245 wide and The tyre factory fitted 235's instead of 245's, the result was rims with bad gutter rash because the tyre didnt protect the rim at all.
 

shiftySLE

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Why do so many people rely on the tyres to protect the rims these days. DON'T HIT THE GUTTER = NO GUTTER RASH!. The Tyre isn't there to protect the wheel, its there to drive on.
 

HoldenOnn

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Total Tyre Height Comparison (from ground to top of tyre when installed on rim);

235/40/19 = 67.06cm (tyre width = 23.5cm)
235/40/18 = 64.52cm (tyre width = 23.5cm)
205/65/15 = 64.75cm (tyre width = 20.5cm)

Obviously the first figure gives away the width of the tyre.

Also, yes its true that some tyres have rim protectors. The rim protector does very little if anything to help protect the rim. The best thing to protect the rim is not to hit or scuff alongside a kerb in the first place. Do not buy tyres based on their rim protector feature.
 

| evaN |

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^^^ he never said it was the same. He listed the overall diameter and the list the widths.
for the first two, the widths are the same but the overall diameter is different.
 
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