The 4000s may also have a much higher thread count. My bike came with 60tpi tires and when they wore out I put 120 tpi tires on and it made a huge difference. I'm sure the new tires are lighter too as they don't have the wire bead the originals had.

 

go to 50g inner tubes, velo plugs and lose even more rotating weight.

 

I modify my cars with aftermarket parts like I do my bikes. However, I seriously don't have the same knowledge on aftermarket support for bikes like I do cars.

Thanks cmg!

 

If you really want to lose more rotating weight go to a Conti supersonic ($35-$45) for a front tire and either a Schwalbe Ultremo zlx or a Vittoria Diamante prolight for a rear tire. after which you can start looking into getting a wheelset with really light rims but by then the disease will have set in and you'll be headed down a path of no return.....tubulars..

 

A 110g difference per tire seems too much. Did you actually weigh the tires? Is this diff based on actual measured weights?

Based on mfg spec, I believe the stock 23c Schwalbe Lugano's weigh 255g each and the 23c GP4000's weigh 215g. The difference here is 40g per tire...

 

You probably used the wire bead model for a weight comparison. The wire beaded (non-folding) Schwalbe is 325gr. The Kevlar beaded (folding, and which is what should have come on your bike) is 245-255gr.

That said, the 4000s is a great tire. Good choice. Try them at 5-10psi under the recommended pressure for your weight, and they'll smooth that CAAD10 right out.

 

You're correct Gimme Shoulder. I thought my tires were wire bead.

After riding on them this weekend for a 60 mile ride, I noticed the GP4000 roll different compared to the Lugano's. My bike felt as if there was more resistance. At initial take off I felt as if I didn't go as far as I would have in the Lugano's. I almost feel like going back to the Lugano's. I'm going to give the GP4000's a few more rides before I switch back for a better comparison. I believe the specs on the GP4000 are superior to the Lugano's but the casing or ply's might offer a different support I prefer.

 

You saved about the weight of 8oz of water I wouldnt sweat it one bit, if you felt the other tires were better, dont hesitate to go back to them.

 

I lost a 1/2 lb by switching from Gatorskins to Ultremo ZX's.

I was amazed too.