[M302_IMOLA]

I have researched this topic extensively and need some help. I am running 19" Ruff Racing Wheels (model 278) on my 02' M3. After researching what the outside diameter of the centerbore of this wheel is I have been informed that it is 73.1mm. Now the car's hub diameter is 72.56mm, so there is a difference of .54mm (basically 1/2 mm). My question is will this minute difference of .54mm be the culprit for my wheel vibration at highway speeds? I mean if I did order hubcentric rings they would be paper thin. I called 1010tires.com and talked to a technician and explained everything to him and he stated that he didn't think that a hubcentric ring of .54mm thickness would help things. What do you experts think? I have recently had an alignment and the wheels and tires have been balanced. Help, I'm at a lost!

[IGotId]

Originally Posted by M302_IMOLA

I have researched this topic extensively and need some help. I am running 19" Ruff Racing Wheels (model 278) on my 02' M3. After researching what the outside diameter of the centerbore of this wheel is I have been informed that it is 73.1mm. Now the car's hub diameter is 72.56mm, so there is a difference of .54mm (basically 1/2 mm). My question is will this minute difference of .54mm be the culprit for my wheel vibration at highway speeds? I mean if I did order hubcentric rings they would be paper thin. I called 1010tires.com and talked to a technician and explained everything to him and he stated that he didn't think that a hubcentric ring of .54mm thickness would help things. What do you experts think? I have recently had an alignment and the wheels and tires have been balanced. Help, I'm at a lost!

not an expert...i just slept in a holiday inn express last night

my advice would be to contact Ruff & ask about e46 m3 fitment/hubcentric rings

[M302_IMOLA]

Originally Posted by IGotId

not an expert...i just slept in a holiday inn express last night

my advice would be to contact Ruff & ask about e46 m3 fitment/hubcentric rings

lol, that would make for a pretty good commercial!

I have tried to find the Ruff Racing Wheels contact on the net and can't come up with anything. If I could, that would solve a lot of this issue.

[jyeo14]

Originally Posted by M302_IMOLA

lol, that would make for a pretty good commercial!

I have tried to find the Ruff Racing Wheels contact on the net and can't come up with anything. If I could, that would solve a lot of this issue.

^^^Hellz Yes it would! omg I love those!

[bmwbob]

Originally Posted by IGotId

not an expert...i just slept in a holiday inn express last night

lol


i have a set of wheels that have a 74mm center bore... but it measures about 73.7 to 73.8 when i use a digital 4 inch caliper. i bought some 73.8 to 72.6 mm rings to see if that centered them. but what i did temporarily was to mount and torque the wheel with hardly any weight on the wheels.. i accomplished this by just barely lowering the jack to where the wheel would not turn and then torqued them to spec before lowering the car. these has completely eliminated the steering wheel vibration i was getting.. not sure if the wheel would remain centered on the lugs only during a pothole impact or not.. i have read plenty about clamping force etc, etc, yada yada..

but it seems to me that, all you have 5 lugs on there. all 5 would have to be dented, or bent in order for that wheel to move any at all. what do you guys think?

[The Nebulizer]

I wouldn't think electrical tape would work so well. Its very flexible (you can easily squeeze a roll down about 10% with just your fingers). I would try something more rigid. A thin piece of metal stripping (probably too thick for your application) or maybe even some aluminum foil or something that won't just deform with a little pressure. Keep in mind that bore is measured as diameter. So, that 1/2mm translates to needing material that is 1/4mm thick. (I don't think you will find plastic that thin). I'd probably try alluminum foil (perhaps a few layers thick) - make them well and they will be reusable.

But, bmwbob's question may be the main issue. Is the spacer just for holding the wheel in place while clamping the bolts down, or does it serve a function while the car is rolling? If just for clamping the wheel then maybe electrical tape is good enough (watch the overlap).

[M302_IMOLA]

Originally Posted by The Nebulizer

I wouldn't think electrical tape would work so well. Its very flexible (you can easily squeeze a roll down about 10% with just your fingers). I would try something more rigid. A thin piece of metal stripping (probably too thick for your application) or maybe even some aluminum foil or something that won't just deform with a little pressure. Keep in mind that bore is measured as diameter. So, that 1/2mm translates to needing material that is 1/4mm thick. (I don't think you will find plastic that thin). I'd probably try alluminum foil (perhaps a few layers thick) - make them well and they will be reusable.

But, bmwbob's question may be the main issue. Is the spacer just for holding the wheel in place while clamping the bolts down, or does it serve a function while the car is rolling? If just for clamping the wheel then maybe electrical tape is good enough (watch the overlap).

Good point, aluminum foil might be the way to go. As far as yours and Bob's question, I would assume that the lugs would hold the wheel in place as far as the x and y axis is concerned but the z axis might be of some concern. Like Bob said will a pothole throw off the wheel orientation.

Bob when will your hubcentric rings be in? I would love to hear the end result whenever you get them.

[bmwbob]

Originally Posted by M302_IMOLA

Good point, aluminum foil might be the way to go. As far as yours and Bob's question, I would assume that the lugs would hold the wheel in place as far as the x and y axis is concerned but the z axis might be of some concern. Like Bob said will a pothole throw off the wheel orientation.

Bob when will your hubcentric rings be in? I would love to hear the end result whenever you get them.

i have them right now.. but it is snow and ice outside... i will take some pics of them in a minute

[Surk///M]

Actually the tape held up well.. drove all last summer with em.. I only wrapped it on spigot once with no overlap..even rolled the excess towards dust cap.. it was a nice tight fit..the bolts will pull in any excess.. worked for me!!

Originally Posted by The Nebulizer

I wouldn't think electrical tape would work so well. Its very flexible (you can easily squeeze a roll down about 10% with just your fingers). I would try something more rigid. A thin piece of metal stripping (probably too thick for your application) or maybe even some aluminum foil or something that won't just deform with a little pressure. Keep in mind that bore is measured as diameter. So, that 1/2mm translates to needing material that is 1/4mm thick. (I don't think you will find plastic that thin). I'd probably try alluminum foil (perhaps a few layers thick) - make them well and they will be reusable.

But, bmwbob's question may be the main issue. Is the spacer just for holding the wheel in place while clamping the bolts down, or does it serve a function while the car is rolling? If just for clamping the wheel then maybe electrical tape is good enough (watch the overlap).

[alpina527]

.54mm will definitely make it shake. You need hubcentrics or a custom made spigot ring.

The hubcentrics won't be paper thin if they are over 10mm thick. Anything less than that isn't possible.