I'd appreciate your opinions: I have a 2007 Raleigh Venture 4.0 comfort bike)1.95" tires. I've had it for 7 months now and must admit it functions as planned meaning 30-60 minute rides for fitness and enjoyment.
However, I'd like to have a somewhat easier time on hills, riding against the wind, etc (including going faster!) and therefore am considering a hybrid where the tires are perhaps 1.37-1.57" wide and a diameter of 700 mm. Included in the list would be the Raleigh Passage, Trek 7200 and Giant Cypress. I must stick to either what I have or these hybrids as I have a herniated disc at L4/L5 and doc says bike riding is good but I must be as upright as possible.
Thank you in advance for your thoughts as to whether or not it is worth the switch.