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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, Aug-08-2010, 01:38:55 AM   #1
thp
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Default Tire Width vs. Tire Weight, which is more important?

What's more important, tire width or tire weight?
Most of the time I think the 225/255 OEM sizes are best in terms of feel. But 255/285 is more rubber so that's better right?

Some fun weights for instance.

Conti Exteme DW
225 22.00 lbs.
255 26.00 lbs.

235 22.00 lbs.
265 25.00 lbs.

245 22.00 lbs.
275 26.00 lbs.

255 26.00 lbs.
285 28.00 lbs.

Is it really worth the 12lb penalty going from 225/255 to a 255/285 setup?
For those who spend soo much $$ to reduce the weight of the rims, but end up loosing all that weight with their bigger tires, was it really worth it?
All for everyday driving with occasional track days (not hardcore enough to get track tires and all that, it's all for fun!).
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Last edited by thp; Sun, Aug-08-2010 at 03:31:44 AM. Reason: adding context
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Old Sun, Aug-08-2010, 02:27:15 AM   #2
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I'd say the lighter weight is more important. However, when you ask if its better, you have to specify what it's better for? 225/255 setup is plenty of tire for the majority of what those tires would see
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Old Sun, Aug-08-2010, 02:33:04 AM   #3
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More important for what? Lighter weight is more important for acceleration and the extra width is better for handeling. If you are looking for better gas mileage, just put a few more PSI in the tires.
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Old Sun, Aug-08-2010, 02:46:32 AM   #4
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My question too....good for what?

For me, I don't drive my car hard enough to notice the small differences in unsprung weight. I would go with the width that looks the best on the size wheel you have...not too much "stretch", but not too "meaty."
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Old Sun, Aug-08-2010, 04:23:22 AM   #5
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Quote:
Originally Posted by thp View Post
What's more important, tire width or tire weight?
Most of the time I think the 225/255 OEM sizes are best in terms of feel. But 255/285 is more rubber so that's better right?

Some fun weights for instance.

Conti Exteme DW
225 22.00 lbs.
255 26.00 lbs.

235 22.00 lbs.
265 25.00 lbs.

245 22.00 lbs.
275 26.00 lbs.

255 26.00 lbs.
285 28.00 lbs.

Is it really worth the 12lb penalty going from 225/255 to a 255/285 setup?
For those who spend soo much $$ to reduce the weight of the rims, but end up loosing all that weight with their bigger tires, was it really worth it?
All for everyday driving with occasional track days (not hardcore enough to get track tires and all that, it's all for fun!).
I went 245/275 so I didn't penalize myself with extra weight lol.

Importance is in the eye of the beholder. Someone who's got 500+ whp could care less about the extra unsprung weight when the car can't keep traction.

Then there are people who will spend tens of thousands of dollars on magnesium/carbon fiber wheels because they've expended all the other avenues of shedding weight.
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Old Sun, Aug-08-2010, 04:50:49 AM   #6
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Quote:
Originally Posted by mugenh22a4 View Post
My question too....good for what?

For me, I don't drive my car hard enough to notice the small differences in unsprung weight. I would go with the width that looks the best on the size wheel you have...not too much "stretch", but not too "meaty."
I totally agree... the tire/wheel combo has to look right. A 255 on an 8" wheel looks sloppy.

Personally, I think the slight stretch of the OEM setup is ideal.... looks just right and delivers ultra tight repsonse without a harsh ride. Wider tires are 100% useless on the street.
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Old Sun, Aug-08-2010, 09:57:33 AM   #7
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I bought an extra pair of rear wheels to put in the front so I can use 255 tires all around. The handling performance was greatly improved. I would prefer tire width over the weight but you don't have to have 285; you can make yourself another option with 255 all around.
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Old Sun, Aug-08-2010, 12:44:46 PM   #8
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Everything on cars is a takeoff; you just have to find the tradeoff that meets yours wants/needs. Personally, I find a 225 front to be pretty undriveable, whereas a 255 front is a perfect tradeoff (for me).

Also, I think your listed tire weights are suspect. There's no way the tire weights don't go up with each extra step of wideness.
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Old Sun, Aug-08-2010, 04:41:15 PM   #9
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Quote:
Originally Posted by Obioban View Post
Also, I think your listed tire weights are suspect. There's no way the tire weights don't go up with each extra step of wideness.
Well, wider tires usually come with small aspect ratios, making for an overall shorter tire in some cases, which means less sidewall rubber.... which offsets the extra width's weight.

I mean, if you stand a 255/35/19 tire next to a 275/30/19 tire the 255 is quite a bit taller, no?
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Old Sun, Aug-08-2010, 05:17:13 PM   #10
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Quote:
Originally Posted by thp View Post
What's more important, tire width or tire weight?
Most of the time I think the 225/255 OEM sizes are best in terms of feel. But 255/285 is more rubber so that's better right?

Is it really worth the 12lb penalty going from 225/255 to a 255/285 setup?
For those who spend soo much $$ to reduce the weight of the rims, but end up loosing all that weight with their bigger tires, was it really worth it?
All for everyday driving with occasional track days (not hardcore enough to get track tires and all that, it's all for fun!).
Depends what you mean by "better" and "worth it".

Since you say for DD'ing with occasional track days I'll assume you're wants are like mine (partial DD with ~6 HPDEs a year). I swapped out the heavy OEM 19" wheels with light tires (PS1) for light 18" wheels (MT1) with relatively heavy tires (265/35 Star Specs all around).

I can't remember the exact weight savings, but I think my new fronts saved fairly minimal weight (1-2lbs each) and the rears saved about 5lbs each. So, the weight savings isn't huge, but the increase in grip is freaking astounding! Plus, the "real" weight savings over keeping the heavy wheels and adding bigger/heavier tires is what you should be looking at, not just the absolute change.

So for me, "yes" it was completely worth switching to light wheels and heavier tires. If you're tracking the car a bit then I'd have to say that you are also going to find it "worth it" to have 255s up front instead of the 225s.
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Discussing Tire Width vs. Tire Weight, which is more important? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)