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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 05-01-2012, 10:32 PM   #41
cyberlando
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Well,if you put it this way then yes size and width does affect "breaking the rear loose" . If you compare same model rims and tires then the bigger rims paired with wider tires will make breaking the tires loose more difficult .

I was just focusing on the fact that you can get skinnier tires that are more sticky/stable then some wider tires, therefore there is no direct correlation with width and stability (breaking rear end loose). Yes you can use 2 sets of same brand/model as data to prove me wrong but when we talk tires, we need to take all kinds of tires into account .

Come on, you know what I mean


that sir is a great explanation cut short!
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Old 05-01-2012, 10:43 PM   #42
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so pretty much cut short bigger rims mean less comfortable ride......for street driving

but the height of the tire rim combo is still gonna be roughly 25in

extra with adds extra traction causing you to need more power to break the rear loose since its better planted on the road!

and over all tire compound is a huge aspect of how much the grip and comfort you get!

the bigger the rim the less the sidewall is going to flex

but too small of a rim will cause the side wall to flex too much causing undesired handling situations.

19's doesnt necessarily mean the rim is heavy, and 17's don't necessarily mean the rim is light either!


this is just me jotting down points that have been pointed out so far......
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Old 05-02-2012, 03:58 PM   #43
Alex323Ci
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Originally Posted by Blocked Out View Post
Well,if you put it this way then yes size and width does affect "breaking the rear loose" . If you compare same model rims and tires then the bigger rims paired with wider tires will make breaking the tires loose more difficult .
I was just focusing on the fact that you can get skinnier tires that are more sticky/stable then some wider tires, therefore there is no direct correlation with width and stability (breaking rear end loose). Yes you can use 2 sets of same brand/model as data to prove me wrong but when we talk tires, we need to take all kinds of tires into account .
Come on, you know what I mean
I can honestly say I didn't know where your stance was on this. I have seen pretty far out ideas posted by some members about things that makes my head spin.

On the second post I was starting to see you were on board with what I found wrong in your post.

But now I can see clearly what you meant to say and sorry to have dragged it out this long.
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Old 05-02-2012, 06:48 PM   #44
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unsprung weight bro!

easy pie.

physics.
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Old 05-02-2012, 06:52 PM   #45
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depending on what you want your car to do, more rubber is better... sidewall height plays a very very important role in how hard you can hit a corner, and how much grip you have off the line.

buddy of mine has an e30 m3, and surprisingly enough... from the research and tips he's been given by well seasoned e30 m3 vets... 15 inch rims give the best performance for those cars... they need the rubber. if one were to ask me, i would have easily though 16's or 17's...

i will say, i think it is fairly easy to say that 18's in general, will perform better than most 19's... there is a such thing as not enough sidewall
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Old 05-02-2012, 07:51 PM   #46
cyberlando
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depending on what you want your car to do, more rubber is better... sidewall height plays a very very important role in how hard you can hit a corner, and how much grip you have off the line.

buddy of mine has an e30 m3, and surprisingly enough... from the research and tips he's been given by well seasoned e30 m3 vets... 15 inch rims give the best performance for those cars... they need the rubber. if one were to ask me, i would have easily though 16's or 17's...

i will say, i think it is fairly easy to say that 18's in general, will perform better than most 19's... there is a such thing as not enough sidewall
right now im running 235 35 19 front and 265 30 19 9.5 rear

can anyone give me a mental image of the effects of not having enough sidewall, what is too much an too little for and e46 m3?
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Old 05-02-2012, 08:29 PM   #47
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right now im running 235 35 19 front and 265 30 19 9.5 rear

can anyone give me a mental image of the effects of not having enough sidewall, what is too much an too little for and e46 m3?
what they're trying to say is that extra thin sidewalls (where tires look like rubberbands) would be more susceptible to damage from pot holes and make for a harsh ride. as the tire is part of the dampening system.

too much would be very tall sidewalls on a 15-16 wheel to make up for the loss in overall diameter. if not a good brand tire where the sidewall is stiff you'd get a bouncy affect like old atv tires.

when it comes to sidewall the brand/model of tire has lots to do with performance or lack of than simply size. a 17" wheel tire combo could certainly be worse than a 19" w&t combo for comfort. but as the tire sidewall gets smaller to match the "plus series" concept to keep the overall diameter correct. the sidewall is made firmer to not "fold" over in/during use. this makes for a firmer ride generally.

there are certain guidelines but those can easily change with (the weights of cars) and the performance aspect of any tire put up.
all of this could change comfort levels just as easily as different air pressures too. so it's hard to come up with a set of rules as many variables can change things.
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Old 05-03-2012, 11:53 AM   #48
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simple its a showcar thing

most cars that are in car clubs and they show their cars get more points for 19" than 18" wheels most guys drop their cars to...

but if you live in the new york area tri state area.. the roads have alot of pot holes and bumps usually 18" wheels takes the potholes better than 19" wheels. but if you know wheels their are some 18" wheels like hre wheels that have the wheels with a softer metel i can tell you my 19" wheels that are kenisis are stronger than my hre 18" wheels..... but most guys by 18" wheels in bklyn because most co's wheels are stronger than the 19" wheels...then i say it is for perf. and to go faster.....
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