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Shimano R540 vs. Mavic Cosmos Wheels(3 posts)

Shimano R540 vs. Mavic Cosmos Wheelsjrescpa
Mar 17, 2003 10:11 AM
Any opinions? My 2003 Supergo Scattante R853 will come with Shimanos. 2002 model bike had the Mavics. Should I upgrade with my purchase or are the Shimanos a good wheelset. They list at $300 and the Mavics at $300, too. I'm riding 100-125 miles/week with hills. I weigh 155 lbs, 5ft 9. The bike weighs approx 21 lbs. Is it worth another $200 to upgrade to Mavic Ksyrium Elites?
re: Shimano R540 vs. Mavic Cosmos Wheelsc722061
Mar 17, 2003 7:35 PM
I have both of these wheel sets. IMHO, R540 feels faster in the climb but the rear wheel goes out of true easier than that of Cosmo. The freewheel on R540 spins easier than on Cosmo on free rolling. They are both identical in weight. Those are my experiences on these wheels. I have the same weight and height with you and riding about the same distance each week. I have been using the R540 for over 1000 miles and the Cosmo for about 200 miles.
re: Shimano R540 vs. Mavic Cosmos WheelsArvinC
Mar 18, 2003 5:28 PM
Hello. I was considering the R540's as well, but now thinking of going with the Cosmos or Cane Creek Areoheads. The main reason? Wheel design...especialy in terms of the spoke count.

I have heard/read alot of horror stories about "Rolf-Style" wheels failing. Then I actually saw one fail! Wow...not pretty. The guy was just riding along, 'bout 20 yards infront of me. A loud snap, he went down, tumbled for twenty feet. He broke a spoke on the drive side, rear wheel. The rim caved instantly.

With wheels like the Cosmos, even though they're radially laced, you still have much more even spoke tension all the way around the rim. So, if you break a spoke (even 2 or 3), you can still limp the bike home. With wheels like Rolfs and the R540, you'll most likely end up with road rash.

It's important to note that even though the number of spokes on the R540 and the Cosmos are vastly different, they weigh about the same. So, if you're going for lightness, you get extra durability with the Cosmos to boot.

Just my .03 cents worth...Cheers!