right ,,iv been told that wheels/tyres are the area to look at for improving the weight of the bike(my fixed that is ) ,,iv got the wheel off(surprisingly light) and its got shoot kenda tyres on (700*32) but the wheels are quite light ,, iv felt carbon wheels and though they are lighter i cant justify £300+rims on a cheap bike from ebay ,,so initially ill b looking at replacing the tyres ,,theyr for commuting and gen tarmac use ,,i was gona go 28mm,so whats reccomended ,,im after a good all round lightish tyre and puncture resistance is an issue(cost as well,i dont want much eh lol) conti gatorskins? and do the tubes make a diff to rotating mass?