Strengths: So light it is amazing. So smooth it is amazing. And the humm they make at speed is just FACTORY ! These things are the BEST wheels Ive ever owned. You will go faster without qustion - simple!
Weaknesses: 2007 stickers are ugly. The matt finish is ugly. the barking area was painted, and slowly wears out over miles. But stragely enough , they still break fine. Theres also a little corrosion under paint, but definitely minor and not affecting anything. These wheels are not pretty like many - but cause of this they kind of shout 'factory'. Mmmm, be nice if they were a bit cheaper, and a bit easier to get your hands on. There's not many bike shops here in aussie that keep them, so makes it a bit hard.
I weigh 105 kgs and have a set of legs built for time trials. Freight train sort of rider. I have gone through that many sets of wheels in my quest for strength yet lightness it's crazy. But these MAG300 are simply the best yet. Fastest wheels I've ever owned without question. Spin up incredibly fast, and even have that hollow weird sort of sound that only carbon zipps seem to make. Although they look like alloy wheels, Magnesium just is different . It's strange. And cause the spoke count is so high, they barely flex. Out of saddle sprints, hills, flat strap time trials and pacelines, whatever I dish out , they barely flex or complain an iota. And thats with my 105kg of wrecking crew treatment. The hub is damn near silent, and the woes of a few years back with faulty hubs/cams etc seems gone. These things are so smooth to ride its uncanny. I only need to pump to 120psi and they ride smooth and fast. I usually pump any rear tyre to well over 145psi to take my weight, and spin fast. these don't need it. Mine are 2007 model. and I'd say the 2008 - 2009 models wud be even better. Ride em day in day out, and don't baby em, cause they are unreal. All I hear is bad things about AMC wheels, but I've had 3 sets ( 2 x cr420 and mag300) and they have been faultless ( except for one time hub recall fault). The braking is fantastic, but when they get totally drenchd in rain riding, they are next to useless. They barely brake at all till dried out. But this is fairly common with most wheels anyway, so don't be to concerned. Just adjust yr riding accordingly to the weather conditions. I'd buy another set of mag300 in a flash, they are that good. I have never ever had a set of wheels that have inspired me so much, and made me WANT to go out and ride my bike. Just talking about them like this makes me hyper enough to go for tomorows ride. Have I said enough - have you got the ghist. Do I need to say any more.
Weaknesses: Not much in rotational mass, so I feel like I work harder to keep up in the flats versus a heavier wheel like Mavic Carbone
I weigh 170 pounds and have yet to true the wheels after two years. I have not babied these wheels in any way. They are very light, fast to accelerate, and smooth. I rode the Mag 300 in Majorca Spain where the roads vary in quality and had no problems.
Weaknesses: Delicate as hell. I am 140 pounds, and within one month, the rim wobbled. So even hitting the slightest of even roads, will mess this wheel up. AC did finally fix it, but after saying that it was my fault. That, I didn't like. So if you're using this for a one day race, fine.Everyday, don't even think about it.
Phenomenal ride feel, fast as heck, light as heck. Terrific wheels. Have black sapim spokes on for 1985 tubular weight.