New Bike - fit old tyres?

[jamin100]

About 200 miles or so ago I brought some GP4000s 25c

Today I've just had a giant defy composite delivered with 23c tyres

Do I put the GP4000s on my new bike and sell my old one with the giant tyres or just leave as is?

 

[John the Monkey]

Do you like the old tyres?

I'd sooner ride 25s than 23s, but if those 23s were Pro Race, all bets are off.

 

[vickster]

Keep the 4000s. Although not bad, they'll be better than the giant tyres. Although psychologically narrower tyres seem quicker on a carbon bike

They delivered that bike quickly!!

 

[jamin100]

Yeh I'm really pleased, only ordered it Sunday night