This is probably a strange question but I'm new to the world of cycling and rather big. I have been riding a MTB with road tyres on. I just want to upgrade to something faster. Weight is a big issue for me as I'm probably the wrong side of 20st (to scared to get on scales). I have been riding for a little while now. My first ride was 3 miles and I have progressed up to 45 miles now on Sunday morning rides. I go in shops looking a road bikes and just wonder if they would collapse under my weight? Any advice would be appreciated (other than loss some weight you fat git!!! I am trying) sorry this is a bit long winded