Originally Posted by
tomtomtom123
I did maintenance on my old Speed that had the old Marathon Plus 47-406 and took it for a short ride. It felt faster than my currently in use bike with Big Ben Plus 55-406, although it may be due to the more outstretched position and lighter weight from not having all the extra accessories. Maybe I'll try swapping the tires one day onto the current bike to test if the hardness is acceptable.
Would be great if you could time yourself on a quick rolldown test or on your regular spin round the block before and after you change the tyres. Really interesting to see if the speed difference is real or just in the impression.