Shimano RS31s

I have a CAAD9 with stock Shimano R500 wheels. Looking to upgrade and just wondering if anyone has views on whether these are any good, and how much of a difference I'll notice. Seems a really good deal, is there a catch!
http://www.evanscycles.com/search?query=rs31&x=0&y=0
thanks
http://www.evanscycles.com/search?query=rs31&x=0&y=0
thanks
0
Posts
If you can do the speeds to take advantage of the more aero rim, then they may be worth the punt.
Not sure how they compare to similar from Fulcrum for example though.
Usually, you need to jump a big step to notice a difference, think RS80/81 from R500 level. If I had R500s that were wearing out and was looking for a cost effective step up I would think of RS30/31s or Aksiums...but if your 500s are ok then keep them until Spring time whilst you save up for some really good wheels like RS80/81 or decent handbuilts.
RS31s aren't an 'upgrade' IMO, they're just different, if not worse! For a start the wider 11 speed cassette body means less distance between the rear flanges, which in theory makes the wheel less laterally stiff than one with a wider flange spacing.
The real issue with these wheels though is that, like most factory built wheels these days, they come with straight pull spokes. As I've broken a handful of spokes - and witnessed spoke breakages on other people's wheels - on long rides over the years, I steer clear of any wheel that comes with them. Aside from costing ten times as much as J-bend spokes, they're not stocked at all bike shops so if you break one when you're a long way from home you can't just get one from the nearest bike shop. This is problematic with some wheels, especially ones with only 20 or 24 spokes - when one spoke snaps some wheels go so far out of true that the rim rubs the brake pads or in some cases the tyre can rub the frame. One of the lads in our club had to call his dad to come and pick him up 50 miles from home for this reason.