275/35/R18 look huge!
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From: Toronto
2014 Lotus Evora S
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Joined: Aug 2009
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From: Houston, TX
2009 C63 with Eurocharged tune and charcoal delete
I'm not sure I get this. The number (255 or 275) is supposed to be "the width of the tire in millimeters at its widest point from sidewall to sidewall when mounted on the recommended rim width". So the number is a measure not a guide. I'm not an expert but the only factor that could change the width would then be the rim and not the tire itself as the number refers to the width when MOUNTED. Could anybody clarify this?
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Joined: Jul 2009
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From: Toronto
2014 Lotus Evora S
Thanks Palladin. I totally agree with you. I was trying to see if different rims could end up changing the net width but based on your response, the answer is no. So to my point, how can a 255 tire of a certain brand be wider than a 255 tire from another brand? 255 is 255 millimeters.
I'm still puzzled by the fact that some members have observed different widths for 255 tires from different brands.
I'm still puzzled by the fact that some members have observed different widths for 255 tires from different brands.
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Joined: Oct 2008
Posts: 84
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From: Cairns, QLD, Australia
c63 AMG, BMW 335 conv
Mr Happy.
You are exactly right, 255 or 275 width in mm should be the same for every brand.
But all i can say from my own experience is that measurement varies greatly from brand to brand.
Like i said, the 275 nexens i tried wer'nt as wide as the stock 255 pirellis.
The 275 yokis i have now are 40mm wider than the nexens.
Wierd i know.
You are exactly right, 255 or 275 width in mm should be the same for every brand.
But all i can say from my own experience is that measurement varies greatly from brand to brand.
Like i said, the 275 nexens i tried wer'nt as wide as the stock 255 pirellis.
The 275 yokis i have now are 40mm wider than the nexens.
Wierd i know.
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From: Los Angeles
C63
The stock rear pirellis on the c63 are actually very wide for a 255.
I recently tried a nexen 275 which didnt measure as wide as the stock pirelli.
Now ive got 275 yokohama advan sport which are huge for a 275.
These yokis measure 40mm wider than the same size nexen.
What im saying is the number on the tyre is more a guide and that all brands are different.
I recently tried a nexen 275 which didnt measure as wide as the stock pirelli.
Now ive got 275 yokohama advan sport which are huge for a 275.
These yokis measure 40mm wider than the same size nexen.
What im saying is the number on the tyre is more a guide and that all brands are different.
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From: Richmond Hill, Ontario, Canada
2010 C63
These look perfect!! That is my next setup. How do you like the T1R's??
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From: Philly
2009 c63
275/35/18 Hankook Ventus v12 look fine. Only slightly beefier looking than OEM sizes. And though they're wider, this particular tire toes not offer as good rim protection as the slimmer OEM pirellis. Will try to post pictures shortly.
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AMG
As the tires wear in they will look less "baloon" like. Changing your tire pressures can also change this a bit as well.
This link should help everyone out figure basically how tire sizes change physical dimensions. Its not 100% accurate since some tires run extremely wide compared to others (Z1s are a good example), but it gives you the basic idea:
http://www.miata.net/garage/tirecalcold.html
This link should help everyone out figure basically how tire sizes change physical dimensions. Its not 100% accurate since some tires run extremely wide compared to others (Z1s are a good example), but it gives you the basic idea:
http://www.miata.net/garage/tirecalcold.html
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Joined: Aug 2009
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From: Sydney & the NSW Central Coast, Australia
C63 AMG, BMW 135i
For years I’ve noticed the discrepancies in widths and road surface contact between brands. To me the ballooning effect from oversize tyres on undersized rims screams sidewall distortion when cornering. I don’t see any advantage in pushing the limits of fitments for a dubious increase in straight line grip at the expense of the handling properties unless the setup is for drag racing only purposes. I feel it’s more important to have maximum road surface contact with correct fitment and not because you are trying to achieve a fatter look. Correct tyre pressure also plays a big part in this.
285 rear & 245 front - Yokohama Advan Sport.
I use 303 Products Aerospace Protectant to retain the sidewalls new black look.
You can see where the tyre makes contact with the road surface by the line where the 303 has worn off. No stretching or ballooning of the tyre here.
Do any other members have photos that show how other brands of tyre and/or irregular fitments compare for surface contact?
.
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Joined: Aug 2009
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From: Tucson, AZ
C63 AMG
I am rolling on Nitto 555 Extreme 275/35/18 and I have absolutely zero issues with rubbing. I appreciate the extra 100 rpm drop in 7th gear at cruising speeds.
The oem Pirellis only lasted 5600 miles and I hardly do burn outs. I will never ever put pirellis even if they were given to me as a present, they are a total POS that don't last.
Next time around I am going 285, YES, YOU HEARD RIGHT!!! I can care less if the tire looks"like a balloom", I am taking care of a issue that 40 AMG engineeers couldn't fix(properly fitting this monster car with a decent set of shoes).
From my own experience, I recommend what I am rolling with (Nitto 555 Extreme 275/35/18), threadwear is 300 and by the way, these tires hook 100 times better than the stock Pirellis.
The oem Pirellis only lasted 5600 miles and I hardly do burn outs. I will never ever put pirellis even if they were given to me as a present, they are a total POS that don't last.
Next time around I am going 285, YES, YOU HEARD RIGHT!!! I can care less if the tire looks"like a balloom", I am taking care of a issue that 40 AMG engineeers couldn't fix(properly fitting this monster car with a decent set of shoes).
From my own experience, I recommend what I am rolling with (Nitto 555 Extreme 275/35/18), threadwear is 300 and by the way, these tires hook 100 times better than the stock Pirellis.
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Joined: Mar 2010
Posts: 160
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E46 M3, '09 C63
Thanks Palladin. I totally agree with you. I was trying to see if different rims could end up changing the net width but based on your response, the answer is no. So to my point, how can a 255 tire of a certain brand be wider than a 255 tire from another brand? 255 is 255 millimeters.
I'm still puzzled by the fact that some members have observed different widths for 255 tires from different brands.
I'm still puzzled by the fact that some members have observed different widths for 255 tires from different brands.
Mr Happy.
You are exactly right, 255 or 275 width in mm should be the same for every brand.
But all i can say from my own experience is that measurement varies greatly from brand to brand.
Like i said, the 275 nexens i tried wer'nt as wide as the stock 255 pirellis.
The 275 yokis i have now are 40mm wider than the nexens.
Wierd i know.
You are exactly right, 255 or 275 width in mm should be the same for every brand.
But all i can say from my own experience is that measurement varies greatly from brand to brand.
Like i said, the 275 nexens i tried wer'nt as wide as the stock 255 pirellis.
The 275 yokis i have now are 40mm wider than the nexens.
Wierd i know.
This is also why if you check Tire Rack specs closely, they differentiate between Section width and Tread Width. Section is probably where they get the 255 rating, and the Tread width is where people say that a certain brand runs wider than the other.
Member
Joined: Oct 2009
Posts: 201
Likes: 1
C63
For years I’ve noticed the discrepancies in widths and road surface contact between brands. To me the ballooning effect from oversize tyres on undersized rims screams sidewall distortion when cornering. I don’t see any advantage in pushing the limits of fitments for a dubious increase in straight line grip at the expense of the handling properties unless the setup is for drag racing only purposes. I feel it’s more important to have maximum road surface contact with correct fitment and not because you are trying to achieve a fatter look. Correct tyre pressure also plays a big part in this.
285 rear & 245 front - Yokohama Advan Sport.
I use 303 Products Aerospace Protectant to retain the sidewalls new black look.
You can see where the tyre makes contact with the road surface by the line where the 303 has worn off. No stretching or ballooning of the tyre here.
Do any other members have photos that show how other brands of tyre and/or irregular fitments compare for surface contact?
[F [/FONT][/SIZE]
285 rear & 245 front - Yokohama Advan Sport.
I use 303 Products Aerospace Protectant to retain the sidewalls new black look.
You can see where the tyre makes contact with the road surface by the line where the 303 has worn off. No stretching or ballooning of the tyre here.
Do any other members have photos that show how other brands of tyre and/or irregular fitments compare for surface contact?
[F [/FONT][/SIZE]
Last edited by blindfold; Jun 29, 2010 at 11:19 PM.
Member
Joined: Sep 2009
Posts: 111
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From: Buena Park, CA
C63
The (35) in your tire size refers to the aspect ratio - This means the sidewall's height is roughly 35% of the tire's width.
Therefore a 275/35/18 is going to be taller than a 255/35/18
(35% of 275 mm is 96mm tall)
(35% of 255 mm is 89mm Tall)
its less than a cm difference, but since its also wider, so it will bubble out on the rim
Therefore a 275/35/18 is going to be taller than a 255/35/18
(35% of 275 mm is 96mm tall)
(35% of 255 mm is 89mm Tall)
its less than a cm difference, but since its also wider, so it will bubble out on the rim
It's definitely more bulbous looking on the stock wheel widths esp. with the amount of tread. AMS Performance is right in that it should look less so as the tire wears down. Going to a tire with more aggressive pattern and less tread (RE-11 or ADVAN AD08) will make a difference too.As soon as I get them cleaned up, I'll snap a photo and use a measuring tape to gauge height from ground to fender line or something.
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From: Northern NJ
2009 C63
Bumping another old thread here, but does anyone happen to have pics with Continental DW 275/35/18 rears?
I'm running 265/35/18 right now and wanted to go PSS in the rear but I'm thinking that I'll order another set of these DW's in 275/35/18 and when these go my fronts should be just about ready to go too and I'll just get PSS all around.
I'm running 265/35/18 right now and wanted to go PSS in the rear but I'm thinking that I'll order another set of these DW's in 275/35/18 and when these go my fronts should be just about ready to go too and I'll just get PSS all around.
Senior Member
Joined: Sep 2010
Posts: 457
Likes: 17
From: California
e63s edition 1
Bumping another old thread here, but does anyone happen to have pics with Continental DW 275/35/18 rears?
I'm running 265/35/18 right now and wanted to go PSS in the rear but I'm thinking that I'll order another set of these DW's in 275/35/18 and when these go my fronts should be just about ready to go too and I'll just get PSS all around.
I'm running 265/35/18 right now and wanted to go PSS in the rear but I'm thinking that I'll order another set of these DW's in 275/35/18 and when these go my fronts should be just about ready to go too and I'll just get PSS all around.
https://mbworld.org/forums/5073875-post54.html
Last edited by sighting; Mar 24, 2012 at 01:18 AM.
