Comments on: Open letter to the SEMA, Wheel & Tire Council http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/ Everything you need to know about wheels and rims for your custom hot rod and daily driver Mon, 12 Dec 2011 21:45:38 +0000 hourly 1 http://wordpress.org/?v=3.0 By: snmiedo http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-3294 snmiedo Mon, 14 Jun 2010 01:24:15 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-3294 Larry, Congratulations on your retirement! I came across your BLOG when I was surfing the web. Would really like to speak to you for some advice if possible. My e-mail is mike@racerxms.com if you would have a few minutes to talk. By the way, nice ride in the photos section. Again, congtratulations on a great career. Best regards, Mike Cohen Racer X Motorsports, Inc. Larry,

Congratulations on your retirement! I came across your BLOG when I was surfing the web. Would really like to speak to you for some advice if possible. My e-mail is mike@racerxms.com if you would have a few minutes to talk.

By the way, nice ride in the photos section.

Again, congtratulations on a great career.

Best regards,
Mike Cohen
Racer X Motorsports, Inc.

]]> By: Larry http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-3292 Larry Sun, 13 Jun 2010 16:39:16 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-3292 <p>Martin,</p> <p>I agree about the look of 22's on a classic car, unless the owner is an NBA basketball player. As for the women contacting me; ah, if it were only as you made it sound.</p> <p>Thanks for the laugh,<br /> Larry</p> Martin,

I agree about the look of 22′s on a classic car, unless the owner is an NBA basketball player. As for the women contacting me; ah, if it were only as you made it sound.

Thanks for the laugh,
Larry

]]> By: Martin http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-3283 Martin Fri, 11 Jun 2010 18:06:28 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-3283 I don't know much about wheels. I think older classic cars look far better with some deep chrome Cragers than the stupid 22 inch spinners. I would think they handle and ride better also. I would like a site where women contact me and say I have knowledge in so and so and to call them as Kimberly asks lol I don’t know much about wheels. I think older classic cars look far better with some deep chrome Cragers than the stupid 22 inch spinners. I would think they handle and ride better also. I would like a site where women contact me and say I have knowledge in so and so and to call them as Kimberly asks lol

]]> By: Kimberly Lewis http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2746 Kimberly Lewis Mon, 01 Mar 2010 20:04:22 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2746 I got your name from Ken Archibald as having some knowledge about the aluminum wheel manufacturing industry in the 1970-1980's. Pleas call me at 310 281 6332. Thanks. I got your name from Ken Archibald as having some knowledge about the aluminum wheel manufacturing industry in the 1970-1980′s. Pleas call me at 310 281 6332. Thanks.

]]> By: Larry http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2321 Larry Tue, 27 Oct 2009 02:21:47 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2321 <p>Scott,<br /> Thanks for your reply. It appears that you are a working member of the wheel industry. I'm happy to see that folks like you are reading my ramblings.<br /> I'm going to assume that you are in the engineering/design end of the business and have access to a CAD system that would allow you to open a DXF drawing I'm emailing you. This drawing is a simple layout of the vertical and horizontal lines of a wheel showing the centerline and the mounting face. I have included 4 actual brake caliper profiles that I have acquired using my method of measuring these profiles. They are all of passenger cars ranging in years from the early 90's to the mid 2000's. I have designed wheels that will accommodate all four of these brakes in one wheel. I tried to use the X and Y factors you described and was unable to develop a configuration using only the X & Y of each brake that would work on all 4 vehicles. I can only assume that I am doing something different than the designers that are using the X & Y Factors. If you can download my drawing and use the brake profiles that I show, and create a configuration that will work in one wheel to fit all 4 vehicles, then I will concede that the X & Y Factors are a viable method. Thanks again for your interest.<br /> Larry</p> Scott,
Thanks for your reply. It appears that you are a working member of the wheel industry. I’m happy to see that folks like you are reading my ramblings.
I’m going to assume that you are in the engineering/design end of the business and have access to a CAD system that would allow you to open a DXF drawing I’m emailing you. This drawing is a simple layout of the vertical and horizontal lines of a wheel showing the centerline and the mounting face. I have included 4 actual brake caliper profiles that I have acquired using my method of measuring these profiles. They are all of passenger cars ranging in years from the early 90′s to the mid 2000′s. I have designed wheels that will accommodate all four of these brakes in one wheel. I tried to use the X and Y factors you described and was unable to develop a configuration using only the X & Y of each brake that would work on all 4 vehicles. I can only assume that I am doing something different than the designers that are using the X & Y Factors. If you can download my drawing and use the brake profiles that I show, and create a configuration that will work in one wheel to fit all 4 vehicles, then I will concede that the X & Y Factors are a viable method. Thanks again for your interest.
Larry

]]> By: Fred http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2313 Fred Fri, 23 Oct 2009 04:27:02 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2313 I have another question regarding offset, I've been searching for a nicer wheel for my 2010 Tundra because the factory wheel looks too plain. In my search I've noticed that most after market wheels for the Tundra have a 30mm to 35mm offset . The OEM wheel is at 60mm. OEM spec is 20x8 @ 60mm my current wheel the wheels I've seen after market are 20x9 @ 30mm or 35mm. My question is why would the aftermarket wheel be so different? What should I be concerned with? It seems like they sell a lot of these wheels, does the aftermarket have a base line spec they start with? I have another question regarding offset, I’ve been searching for a nicer wheel for my 2010 Tundra because the factory wheel looks too plain. In my search I’ve noticed that most after market wheels for the Tundra have a 30mm to 35mm offset . The OEM wheel is at 60mm. OEM spec is 20×8 @ 60mm my current wheel the wheels I’ve seen after market are 20×9 @ 30mm or 35mm. My question is why would the aftermarket wheel be so different? What should I be concerned with? It seems like they sell a lot of these wheels, does the aftermarket have a base line spec they start with?

]]> By: scott http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2305 scott Fri, 16 Oct 2009 22:00:51 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2305 X factor is the horizontal measurement in mm from the mounting flange to the outer most point of the caliper/bracket. Y factor is the same measurement from the centerline vertically X factor is the horizontal measurement in mm from the mounting flange to the outer most point of the caliper/bracket.

Y factor is the same measurement from the centerline vertically

]]> By: Larry http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2186 Larry Thu, 20 Aug 2009 16:50:22 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2186 Fred, Yes the so-called "X Factor" is the clearance between the wheel and the brake system. And no, there is no industry standard. When I was applying for a TUV (the German regulatory agency)certification, I was informed that they required a 2mm clearance from the wheel to any part of the braking or suspension systems. I adopted that as my standard when I designed wheels. Great question, I wish more people were interested in that type information. Larry Fred,
Yes the so-called “X Factor” is the clearance between the wheel and the brake system. And no, there is no industry standard.
When I was applying for a TUV (the German regulatory agency)certification, I was informed that they required a 2mm clearance from the wheel to any part of the braking or suspension systems. I adopted that as my standard when I designed wheels.
Great question, I wish more people were interested in that type information.
Larry

]]> By: Fred http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/comment-page-1/#comment-2180 Fred Wed, 19 Aug 2009 01:28:56 +0000 http://wheelprofessor.com/2009/04/19/open-letter-to-the-sema-wheel-tire-council/#comment-2180 In regards to the fitments and applications, is X the clearance from the brake caliper to the wheel? if this is an unknown , what would be a safe clearance (2mm?) or is there a min standard for clearance? I'm interested is there a min industry standard ? In regards to the fitments and applications, is X the clearance from the brake caliper to the wheel? if this is an unknown , what would be a safe clearance (2mm?) or is there a min standard for clearance? I’m interested is there a min industry standard ?

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