The rear wheel has developed a crack at the valvve stem hole on the inside of the rim. It is impossible to hold any air now and I must use a tube. Have been running this wheel for over two years and lots of miles. A friend has the same wheels and purchased at the same time and has the exact same crack. The crack appeared this year in my wheel and last year in my friends.

Has anybody else experienced this specific cracking problem?

Wheel was sold by jensens I presume built by Mavic.

Very light-weight, stay true, tubeless so you can run less air pressure.

Rear wheel rim cracking at the spoke attachment and spokes pulling out of the rim. Less selection with tubeless tires, but the selection is growing fast so it is getting to be a non-issue.

The Mavic wheels were on my bike when I purchased it. Until recently the wheels have been very good and endured 15 months and 1650 miles of cross country riding over all sorts of terrain. I have only had to slightly true-up the wheels a couple of times in 15 months. The wheel are light and the ceramic on the rim braking area has held up well. I ran tubeless for the first 3 months but didn't like the tubeless tire selection so I have run tubes for the last year. Also, when you have a flat out on the trail, you usually need to put in a tube anyway to get you home. I have been very pleased with the wheels until now. I probably would not have spent the money to buy these rims had they not come with the bike. These are more of a racing wheel than a wheel you would buy to endure normal cross country trail riding. Saturday I popped three spokes out of the rim on the back wheel during a short climb over a rocky area that required a lot of torque. A week ago I had to true-up the back wheel which should have been an indication to me that something was wrong because the wheel was farther out than ever before. I also noticed a few very small cracks in the rim where two of the spokes are attached. I thought I could get a couple of Labor Day rides completed before taking the wheels back to the bike shop where I purchased my bike so they could check it out and contact Mavic. The front wheel does not seem to be exhibiting any of the rim cracking nor do the spokes appear to be pulling out. The bike shop is contacting Mavic this week, we will see how they respond.

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Leaky rims, brittle spokes, absolutely crappy hubs

Another sucker here.

Wheels suck and Mavic's customer service swallows.

".....but have you been servicing them after every ride?".

If only I could reach through that phone and ........... you know what I mean.

most excellent so far in every aspect but here's the thing:

these are Crossmax "SL" -- and look at the reviews -- there are FIVE different "Crossmax" wheels reviewed here -- and not one of them "SL" - so I don't know if this is the correct product.

can't find one yet but also haven't mounted tubeless which are supposed to be difficult? - so far only tube & tires (WTB's Velociraptor & now Nokian studded (296.) Don't use rimstrip with tube (as I did at first)- and pump the tires way up to 70+ pounds to make bead seat before letting air out to proper pressures.

I have the SL disc wheel on front and SL ceramic rim wheel on rear.

So far no problems. Might try tubeless in the spring if I can find f & r UST tires as agressive as WTB's Velocipraptors as I love low low pressure for these non-stop roots, boulders and slippery-ass-trees that cover our non-stop technical singletrack out here in New England.

Don't know what these others are talking about with spokes pulling out if it even applies to SL as I said there's no "SL" review here.

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just the old Mavic metal rim brake which finally wore through so bought these

Nice looking

Not as light as Mavic would have you believe, flexy, not very strong.

Don't believe the hype Kiddies! I'm happy to say I didn't pay retail price for these wheels. First of all they are too damn flexy. Probably do to the low spoke count but you would think Mavic would have made the rim stronger to counter this. They didn't. And they are not as light as Mavic claims. For a wheel so expensinve I'd expect superlight and stiff wheels. Worst of all though, I pulled out 3 spokes going uphill. Yes uphill. I'm 5'10" and 160lbs, so I really don't believe I have such power to rip out spokes but I did. 1 spoke ripped completely out and the other 2 partially ripped out. Needless to say the wheel is toast. To top it off I've been waiting for over a month for Mavic to send replacement parts (new spokes and rim) and still I don't have a rear wheel. The rim finally came a couple of days ago but no spokes. Are you kidding me? Mavic apparently doesn't care for it's customers. I'm sure glad I'm not racing now or I'd be having a fit (actually I am still having a fit, wouldn't you?). Happily my LBS leant me a replacement wheel until my wheel is fixed.
The bottom line is the tubeless revolution is over for me. I've tried a couple different brands of tubeless wheels and niether pair lived up to the hype. Time for some Chris King hub and 517's.

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Bontrager Racelite

Wheels roll great, huge difference from a traditional tubed tire. Adjustable bearings. Makes almost any bike look cooler

if there is a major problem with the wheel it must be sent back to france (3 day Fed EX is 66.00). No wheel set should cost this much.

The wheels are great, as long as Mavics direction are followed you shouldnt have a problem. Do not over infate tire it will blow off and cause damage to the wheel and tire, and possible to you. If tire is leaking down at a rate that is unexceptable, fill the tire up and squrit the wheel and tire down with a soapy solution to see where it is leaking from. Especially check the spoke nipples since there shouldn't be any air leaking from them, if there is air leaking that mean there is a crack in the rim and it should be sent back to the factory.

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I've only used traditional tubed wheel sets in the past

Weight

Difficult to figure cause of flatting problem

Front tire flatted on a technical descent, bad crash. Still unable to determine cause of leak. Tire not holding any pressure > 2 days, goes completely flat. Back tire working great. New design is way to go but flatting problem is causing me to lose confidence. Bike shop is currently trying to figure it problem.

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None, first set of tubeless

Uhhh... you can run mushy low tire preasures?

Heavier, leaks air, rim dents easy ruining tubeless system seal, expensive and pain in the arse to maintain...

Well, promises and hype are the name of the game with the UST system I've learned over the last season.

Ok, no pinch flats, but easy to dent the rim. VERY expensive to replace this rim. OUt on the trail I dented the rim while riding 40psi (way above the minimum 30!). With the new addition to the shape of the rim, there was no chance of reseating the tire. Even without the dent, reseating out on the trail is impossible. Now I've got a heavy, expensive tubed wheel.

Does anybody really like the squirmy ride of really low (30-40psi) preasure? Cornering stinks and out of saddle climbing they are soft and mushy feeling.

I've also had many mysterious flats and slow leaks with the UST wheels. For no apparent reason they loose air all of a sudden.

I like the idea of tubeless. The UST system is not finished. Too many flaws that don't justify spending that much money.

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Bontrager Race Lite, Spinergy Xyclone, Cane Creek WAM

Light weight, somewhat rigid

I weigh 210lbs. I can not ride low pressure especially on an embankment as the tire pulls away from the rim allowing dirt into the bead and become FLAT. You can not inflate tubleless tires with a small hand pump!! Bring CO2 inflators! The tire requires large volume of air to reinflate, not possible with a hand pump especially if the tire loosens up off the rim. Dont expect to remove the tire quickly from the wheel as it is a BEAR to remove and replace. Patching the tire works well but putting the tire back onto the wheel is a real chore. I would like to see repair kits such as those for auto tires enabling one to patch a tubeless tire without removing it from the rim, damn it takes effort!! Expolding nipples (see below).

Not a bad wheel set overall. However I am waiting to hear back from Mavic as 2 spoke nipples broke free from the rear rim!! This recently happened after I noticed that the wheel was not true. I inspected my front wheel and it is apparent that this is starting to happen as well. The nipple exploded outward thus tearing the rim, the wheel is now useless. The wheel has been returned to Mavic for replacement. My front wheel is going back as well. I hope this is just an isolated incident and hope that Mavic warrants the wheelset. The wheelset performed well otherwise.

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Sun Ringle, Mavic 517s,

light weight durable

expensive to buy and repair

great handling light weight and durable. I got a smokin deal on these wheels and love them. I have rebuilt the rear wheel and it cost $250.00 due to a high speed collision with another rider he split the cost of the rebuild but other than that no problems neve trued or anything. I recomend these wheels for xc riders looking to cut some weight.

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