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Old 10-30-2008, 12:45 AM   #1
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Question... Marchesini Magnesium

Guys,
Are there any issues with a big ol' guy like me riding the GSXR liter bike on the Marchesini magnesium wheels? Any chance of bending or breakage at the track?

I have a potential opportunity to pick some up at a really good price. Information appreciated.

-Curt
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Old 10-30-2008, 12:47 AM   #2
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Old 10-30-2008, 01:07 AM   #3
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Theoretically those wheelz are stronger than your stock. At least that is what I have been told.
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Old 10-30-2008, 01:13 AM   #4
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Tiatool, that's not what I'm reading. People are suggesting that the magnesium wheels are track only and don't hold up as well to the potholes and other debris encountered on the road. I'm thinking my additional weight might exacerbate the problem.
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Old 10-30-2008, 01:17 AM   #5
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That was what I thought untill I was told they are stronger and they proved it by dropping them rim only (no tyre) from about 5 feet. The stockers dented and the mags stayed true. Read it on the R1 forum.

I hear you on the potholes and such, which is why they would be considered track only ect... but was TOLD this is a wives tale.
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Old 10-30-2008, 01:21 AM   #6
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BOTH Forged aluminum & Forged Magnesium wheels are an excellent choice for rough roads, or High Speed Racing

http://www.hardracing.com/Rims/Marchesini.htm
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Old 10-30-2008, 01:23 AM   #7
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Tiatool, you are quoting sales literature I'm looking for some real world experience.
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Old 10-30-2008, 02:17 AM   #8
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they are much stronger than cast aluminum wheels, don't believe the "not safe for the street" bs people like to claim. they are stonger and lighter. plain and simple. they are also, however, much harder to repair if they do get damaged. if you can get them, then do. they generally weigh much less than oem cast wheels, and their weight is closer to the center of the wheel, so the rotational mass is even less. you'll notice quicker turn-in, and an overall "lighter-on-its-feet" feel compared to the stock wheels.

but keep in mind, generally you have to get a new sprocket as well, as marchesini uses a proprietary bolt pattern.
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Old 10-30-2008, 08:17 AM   #9
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I believe I have heard of fatigue with the mags though so look into that too.

I personally wouldn't buy the mags to ride on the street, and many others I have notice wouldn't buy the aluminums to ride on the track. Everyone gets the wheels for different reasons from what I have noticed since picking mine up.

The mags should be considerably lighter, and nice to have, but I would still hesitate to use them on the street. On the track I wouldn't have much worry unless there is a big mishap that tosses the bike around.

Are you looking at 16.5's or 17's? If they are 16.5's you may have a big problem finding anything other than slicks to put on them.
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Old 10-30-2008, 08:28 AM   #10
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these are 17's.
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Old 10-30-2008, 09:04 AM   #11
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Quote:
Originally Posted by maxgs View Post
Tiatool, that's not what I'm reading. People are suggesting that the magnesium wheels are track only and don't hold up as well to the potholes and other debris encountered on the road. I'm thinking my additional weight might exacerbate the problem.
exactly my understanding too,
I know of a couple of heavyweight racers who have used them on track without issue.
think I read something about them being too brittle for "everyday" road use particually where potholes are concerned
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Old 10-30-2008, 09:12 AM   #12
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Darius is a stunter runs them and his hold up fine... never really see him fall much tho
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Old 10-30-2008, 09:31 AM   #13
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these are 17's.
Talking about your boots?
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Old 10-30-2008, 10:55 AM   #14
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Quote:
Originally Posted by maxgs View Post
Guys,
Are there any issues with a big ol' guy like me riding the GSXR liter bike on the Marchesini magnesium wheels? Any chance of bending or breakage at the track?

I have a potential opportunity to pick some up at a really good price. Information appreciated.

-Curt
i hate u curt
GET EM!!!!!!!!
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Old 10-30-2008, 11:01 AM   #15
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Your 300 lbs of bulk (guessing high, don't take offense) is nowhere near the impact force of a wheel falling into a pothole at 60 mph. Unless you plan on slamming down some wheelies on the track, you'll be fine.
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Old 10-30-2008, 01:17 PM   #16
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OK, so some interesting information regarding the Marchesini Magnesium wheels. First, a national distributor has suggested that Marchesini is going to release a new magnesium wheel in '09; they expect that to result in a significant end of year sale on the magnesiums similar to last year when they were available for $2,250 shipped. That's lower than the price I found, so I'll be waiting a couple of weeks to see what happens.

Further, I've been told that magnesium wheels become brittle over time which has impacted the TUV rating. In a racing environment, the supplier I spoke with recommend replacing the wheels after three years. This gentleman wasn't trying to push any other product, he was just sharing information.

So, I'll hold off on this purchase for a bit to see what happens with Marchesini towards the end of the year. I also will try to validate the statements about the magnesium wheels becoming more brittle over time.

-Curt
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Old 10-30-2008, 02:18 PM   #17
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Quote:
Originally Posted by maxgs View Post
OK, so some interesting information regarding the Marchesini Magnesium wheels. First, a national distributor has suggested that Marchesini is going to release a new magnesium wheel in '09; they expect that to result in a significant end of year sale on the magnesiums similar to last year when they were available for $2,250 shipped. That's lower than the price I found, so I'll be waiting a couple of weeks to see what happens.

Further, I've been told that magnesium wheels become brittle over time which has impacted the TUV rating. In a racing environment, the supplier I spoke with recommend replacing the wheels after three years. This gentleman wasn't trying to push any other product, he was just sharing information.

So, I'll hold off on this purchase for a bit to see what happens with Marchesini towards the end of the year. I also will try to validate the statements about the magnesium wheels becoming more brittle over time.

-Curt
Everything I've read says to strip/check/repaint mag wheels every few years. I don't think they magically become more brittle unless the mag is exposed to the elements.
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Old 10-30-2008, 03:04 PM   #18
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I have heard that magnesium is more poreus [or is it porus?] than aluminum so its important to keep an eye on your tire pressure, but given thet most sportbike rideres check that pretty often it shouldn't be an issue

by keep an eye on pressure, I think they were refering to you have to check and adjust every few weeks, you can't just expect them to stay the way most people do to their cars
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Old 10-30-2008, 03:13 PM   #19
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Quote:
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I have heard that magnesium is more poreus [or is it porus?] than aluminum so its important to keep an eye on your tire pressure, but given thet most sportbike rideres check that pretty often it shouldn't be an issue

by keep an eye on pressure, I think they were refering to you have to check and adjust every few weeks, you can't just expect them to stay the way most people do to their cars
Geez! That's what nitrogen is for.
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Old 10-30-2008, 03:23 PM   #20
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Magnesium/alloy holds up ok by itself. We not have engine blocks constructed from them.

It is a softer metal on the spectrum and usually coated/powercoated after being molded or cut to retain shape.

Corvettes have had magnesium/alloy options(comes in a chrome) for a few years; all the old ferrari wheels I use to change out could be bent by dumbazz tire installers but remember with the correct tire pressures force load is applied momentarily to the sprockets as they rotate; The tire takes alot of the grunt of the forces.

What does lighter do, negatively? Imbalance will be more significant because there isn't a dense weight to absorb reflection.


Slowblack05 has some on his 1000rr if Im not mistaken...stunting w them this last Sunday... may want to hit him up on some advice. I believe he was running bt002's as well. He needed to use a kawi sprocket to make it fit his bike(as per wheel requirements.)
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