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2Addicts | BMW 2-Series forum Technical Topics Wheels and Tires -- Sponsored by The Tire Rack Introducing Keith@tirerack.com. Your new wheel/tire moderator.

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      03-22-2016, 02:40 PM   #1
Rudy@tirerack
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Introducing Keith@tirerack.com. Your new wheel/tire moderator.

Forum Members,

I wanted to take a moment to introduce myself. I am excited to be given the opportunity to be your Tire and Wheel forum moderator! I have worked with Tire Rack for nearly 12 years with various departments. Owning many BMW's over the years, they have been my passion for as long as I can remember. I hope my extensive knowledge of wheels, tires and BMW's will be a helpful resource to the forum. My goal is to provide our forum members the highest level of service possible. I will do my best to reply to all your questions and inquiries in a timely manner. Please feel free to contact me directly at Keith@tirerack.com or calling me directly at 800-428-8355 ext. 4799 if I can be of assistance.

When you order online with TireRack, please click this link: http://www.tirerack.com/a.jsp?a=BS2&url=index.jsp and/or reference "Keith/2addicts" as your previous contact.

This helps pay for the server and related maintenance through the commissions received from TireRack sales. It costs you nothing, but 2addicts.com will receive a small % back from the sale which is used to directly pay for bandwidth.

Last edited by Rudy@tirerack; 04-21-2016 at 09:35 AM..
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      03-22-2016, 06:12 PM   #2
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Welcome Keith
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      03-22-2016, 06:22 PM   #3
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Welcome, any forum member discount codes??
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      03-22-2016, 10:33 PM   #4
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Welcome. Nice to have an expert answering questions.
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      03-23-2016, 08:06 AM   #5
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Hi Keith. Some of us are discussing what the maximum section width is still safe on 7.5 inch wide tires. Can one mount a 245 on those?
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      03-23-2016, 09:16 AM   #6
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Thank you for welcoming me!

Most 245's cannot be safely mounted on a 7.5" wheel. 245/35/18 and 245/40/18 would both require a 8" wheel minimum. A 245/45/18 will fit on a 7.5" wheel as it has a taller sidewall and can flex a little more.

With that said, people will attempt to squeeze 245s on 18x7.5 wheels, but it is not recommended and would void the warranty of the tire.
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      03-29-2016, 08:05 AM   #7
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Welcome Keith! Nice to have a rep here! I was just reminded of a question I need to ask Tire Rack, which may also help others.

I purchased a set of O.Z. Leggera HLT 18x8 wheels and 235/40r18 MPSS tires from Tire Rack for my M235i last September. They came with the standard carbon fiber O.Z. center caps. I was looking on O.Z. Racing's website some time ago and noticed something on the Leggera HLT spec page.

http://www.ozracing.com/wheels/oz-ra...ch/leggera-hlt

Note the line that says OE Cap Ready, indicating Porsche and BMW. I contacted O.Z. Racing on twitter and inquired if they knew of a specific center cap (they must, based on their website), but they told me to contact my place of purchase.

So my question is, do you know what BMW center cap will fit these wheels? Is it something Tire Rack stocks? I don't really mind the carbon fiber ones, but would rather have a BMW cap if possible. I have searched dealer/parts sites and haven't found anything that looks like it would be a compatible diameter yet.
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      03-29-2016, 11:09 AM   #8
Rudy@tirerack
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Quote:
Originally Posted by rjroch View Post
Welcome Keith! Nice to have a rep here! I was just reminded of a question I need to ask Tire Rack, which may also help others.

I purchased a set of O.Z. Leggera HLT 18x8 wheels and 235/40r18 MPSS tires from Tire Rack for my M235i last September. They came with the standard carbon fiber O.Z. center caps. I was looking on O.Z. Racing's website some time ago and noticed something on the Leggera HLT spec page.

http://www.ozracing.com/wheels/oz-ra...ch/leggera-hlt

Note the line that says OE Cap Ready, indicating Porsche and BMW. I contacted O.Z. Racing on twitter and inquired if they knew of a specific center cap (they must, based on their website), but they told me to contact my place of purchase.

So my question is, do you know what BMW center cap will fit these wheels? Is it something Tire Rack stocks? I don't really mind the carbon fiber ones, but would rather have a BMW cap if possible. I have searched dealer/parts sites and haven't found anything that looks like it would be a compatible diameter yet.
Thank you for checking with me.

I am happy to look into this for you. I believe OZ has a ring system that clips into the wheel, then the OE BMW cap clips into that. I will check and let you know. Please direct message me with your name and email address, that way I can look up your Tire Rack account.

Thank you,
Keith
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      03-31-2016, 10:52 AM   #9
Rudy@tirerack
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Quote:
Originally Posted by rjroch View Post
Welcome Keith! Nice to have a rep here! I was just reminded of a question I need to ask Tire Rack, which may also help others.

I purchased a set of O.Z. Leggera HLT 18x8 wheels and 235/40r18 MPSS tires from Tire Rack for my M235i last September. They came with the standard carbon fiber O.Z. center caps. I was looking on O.Z. Racing's website some time ago and noticed something on the Leggera HLT spec page.

http://www.ozracing.com/wheels/oz-ra...ch/leggera-hlt

Note the line that says OE Cap Ready, indicating Porsche and BMW. I contacted O.Z. Racing on twitter and inquired if they knew of a specific center cap (they must, based on their website), but they told me to contact my place of purchase.

So my question is, do you know what BMW center cap will fit these wheels? Is it something Tire Rack stocks? I don't really mind the carbon fiber ones, but would rather have a BMW cap if possible. I have searched dealer/parts sites and haven't found anything that looks like it would be a compatible diameter yet.
We test fit the BMW cap into your wheels, the caps are a little too large and will not fit in place. So I sent a message to OZ regarding this. OZ tells me the 19" and 20" Leggera HLT 5x120 will accept the BMW center caps, but the 18" will not. Not sure why they built it this way.

Thanks again,
Keith
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      04-01-2016, 11:24 AM   #10
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Disappointing, but certainly not your fault. Thanks for digging into that!

I see O.Z. have now also edited their site to include this information...would've been helpful 8 months ago!
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      05-03-2016, 06:14 PM   #11
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Xdrive stock tire sizes

He Keith,

Why is it that the stock 2 series xdrive comes with tires that are over 2% in difference in rolling diameter?? This is contrary to the awd golden rule of less than 1%. Do you have any insight on this? Would you recommend getting tires to reduce that variance? Couldn't this cause premature wear in the awd components?
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      05-03-2016, 09:15 PM   #12
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Hey Keith, welcome!

Kindly please chime in on this thread:

http://www.2addicts.com/forums/showthread.php?t=1257822
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      05-03-2016, 09:23 PM   #13
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Also, we've got a 2013 X3 28xdrive. We're really dissatisfied with the stock brakes - feel like the first 70% of the pedal travel is met with 20% caliper effort. Then, it suddenly grabs. But even then it feels sloppy.

We had the pads and rotors replaced recently at the dealership and it still feels the same.

I scoured the X3 forums and it was no help.

You happen to carry a lot of pad options for the X3. Is there a front pad that you'd recommend that will help the X3 brake better and feel better?

Thanks!
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      05-04-2016, 09:12 AM   #14
Rudy@tirerack
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Quote:
Originally Posted by nl328i View Post
He Keith,

Why is it that the stock 2 series xdrive comes with tires that are over 2% in difference in rolling diameter?? This is contrary to the awd golden rule of less than 1%. Do you have any insight on this? Would you recommend getting tires to reduce that variance? Couldn't this cause premature wear in the awd components?
We have noticed this trend with several AWD manufactures lately. The 2-series has a 1.4% difference between front and rear, some other manufactures have as much as 2-3%. I agree this is contrary to the AWD golden rule, although if the manufacture is sending cars out of the factory this way, we have to assume they have engineered the drivetrain and software to accommodate this variance. It is very possible the new drivetrains have increased tolerances. I have faith that the engineers at BMW know what they are doing, so I do not think this will cause any premature wear to the AWD system.
You could possibly contact BMW North America and they may have better information or maybe there is a BMW engineer on here that would like to chime in??
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      05-04-2016, 10:07 AM   #15
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Quote:
Originally Posted by Mywifes335 View Post
Also, we've got a 2013 X3 28xdrive. We're really dissatisfied with the stock brakes - feel like the first 70% of the pedal travel is met with 20% caliper effort. Then, it suddenly grabs. But even then it feels sloppy.

We had the pads and rotors replaced recently at the dealership and it still feels the same.

I scoured the X3 forums and it was no help.

You happen to carry a lot of pad options for the X3. Is there a front pad that you'd recommend that will help the X3 brake better and feel better?

Thanks!
We have always found OE BMW pads to be very touchy. Many people complain that they bite too quick.
If you are looking for more initial bite, I would recommend the Hawk HPS, http://www.tirerack.com/brakes/brake...se+Model&a=AH8

I personally use these on all of my cars and have been very satisfied. I have found they have more initial bite than the factory pads and do not fade. (at least on the street). *At this point Hawk only builds this pad for the front of the vehicle.
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      05-04-2016, 10:21 AM   #16
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Quote:
Originally Posted by Keith@tirerack.com View Post
We have always found OE BMW pads to be very touchy. Many people complain that they bite too quick.
If you are looking for more initial bite, I would recommend the Hawk HPS, http://www.tirerack.com/brakes/brake...se+Model&a=AH8

I personally use these on all of my cars and have been very satisfied. I have found they have more initial bite than the factory pads and do not fade. (at least on the street). *At this point Hawk only builds this pad for the front of the vehicle.
I agree, in the past BMWs had more initial but but the X3 just feels like marshmallows.

So the HPS should improve not just initial but but overall feel too?

I'm fine just getting the fronts since most of the braking force is in the front

Thanks so much Keith!
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      05-04-2016, 11:18 AM   #17
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Quote:
Originally Posted by Mywifes335 View Post
I agree, in the past BMWs had more initial but but the X3 just feels like marshmallows.

So the HPS should improve not just initial but but overall feel too?

I'm fine just getting the fronts since most of the braking force is in the front

Thanks so much Keith!
Glad to help! The HPS will be an overall improvement from factory. This has been my go-to pad for many years. It has never let me down.
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      05-10-2016, 10:51 AM   #18
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Just wanted to give a shout out to Keith who helped me put together a sweet OZ LEGGERA HLT in BRG with some 235/40/18 DWS06's for my cab.

Great guy !

edit: Arrived in 2 days!




Last edited by OpenAir; 05-13-2016 at 02:18 PM..
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      09-18-2019, 12:16 PM   #19
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Hoping to get some help with specific tech Question - wanting suggestions or info on best hot track pressures for Potenza s007A's for upcoming HPDE. Stock 18" staggered setup on 228iX (225/245's), no camber plates or other suspension mods.

I fear that this is an area where the lawyers have taken over, as all I can get is generic 'use manufacturer recc's' when I called in to your main tech# (did finally get thru to somebody there who would actually address the Q, but he swears he just sets his tires cold and never checks hot pressures after track sessions; acted like I was weird to be asking about hot pressures). Bridgestone is even less helpful - they shunt me to a Firestone dealer and the 'factory specs' they regurgitate do not even match BMW info for road use. Any suggestions? or do you have a line to somebody at Bridgestone that would have track-specific info? Thanks
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      09-19-2019, 08:43 AM   #20
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Quote:
Originally Posted by Maynard View Post
wanting suggestions or info on best hot track pressures for Potenza s007A's for upcoming HPDE.
My go-to for street tires on the track is 36 psi hot.

If the car feels a bit unresponsive at that pressure, go up 2 psi and see how that feels. If it feels like the car is skating around a bit (esp. on corner entry), drop them 2 psi and see how that feels.

Depending upon the track, I assume a 7-8 psi gain from cold.
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