40 series tires on the rear with 18" rims
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From: Los Angeles, California
2000 CLK 430
40 series tires on the rear with 18" rims
Has anyone put 40 series tires in the rear with 18" rims....I know they are suppose to be 35 series...but the last car i had with 35 series tires made driving a lil uncomfortable cuz there isnt much room if u accidentally hit anything/pothole to cushion the rims. Also a friend of mine on this forum who lives close by always blows his rear tires....most recently tires he just had mounted 2 weeks ago...needless to say, he is pist. I know this will throw off the speedometer a lil too, due to the increase in over all diameter size. So having said that....just wanted to know if anyone experienced 40 series tires on 18'rims (i.e. 255/40/18 for the rear)...Thanks!
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Joined: Nov 2002
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From: Genoa, NV
2014 GLK250 BlueTec & 2009 ML320 BlueTec
Specification Sidewall Radius Diameter Circumference Revolutions Difference
255/40-18 4.0 in 13.0 in 26.0 in 81.8 in 775 / mile N/A
Specification Sidewall Radius Diameter Circumference Revolutions Difference
265/35-18 3.7 in 12.7 in 25.3 in 79.5 in 797 / mile N/A
Specification Sidewall Radius Diameter Circumference Revolutions Difference
245/40-17 3.9 in 12.4 in 24.7 in 77.6 in 816 / mile N/A
Here's the comparison between the original rear tire, the optimum for an 18" wheel and yours.
255/40-18 4.0 in 13.0 in 26.0 in 81.8 in 775 / mile N/A
Specification Sidewall Radius Diameter Circumference Revolutions Difference
265/35-18 3.7 in 12.7 in 25.3 in 79.5 in 797 / mile N/A
Specification Sidewall Radius Diameter Circumference Revolutions Difference
245/40-17 3.9 in 12.4 in 24.7 in 77.6 in 816 / mile N/A
Here's the comparison between the original rear tire, the optimum for an 18" wheel and yours.
MBWorld Fanatic!
Joined: Nov 2002
Posts: 1,438
Likes: 1
From: Genoa, NV
2014 GLK250 BlueTec & 2009 ML320 BlueTec
Originally Posted by CurYousGee
thanks for the response to my post....i guess going with 40 series with 18" rims will increase the over all diameter too much?
Yes it will, and because the tire is tall, you will need to keep a narrow wheel to prevent fender rubbing.
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MBWorld Fanatic!
Joined: Sep 2004
Posts: 1,178
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From: Los Angeles, California
2000 CLK 430
thanks for replying again...as u can tell im new to this forum...one last question.....well going with 40 series also make the car uneven....higher in the back and lower in the front too? I am assuming so.....i should probably just go with the specs and get 35's, Hope i dont pop them like my last 35 series tires.
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Joined: Aug 2003
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From: Bay Area, CA
01' CLK55
Originally Posted by CurYousGee
thanks for replying again...as u can tell im new to this forum...one last question.....well going with 40 series also make the car uneven....higher in the back and lower in the front too? I am assuming so.....i should probably just go with the specs and get 35's, Hope i dont pop them like my last 35 series tires.
