Originally Posted by
nrsmd
What do you recommend for a road bike (700C) tire width and air pressure?
There is not enough info here to make any specific recommendation. We need to know what frame clearance you have (older bikes often don’t have enough room for modern wider tyres). Also need to know your weight and how smooth your road surfaces are.
The general trend is clearly toward wider road tyres. 28 mm is now a very common width compared to 23 mm a decade ago. If your roads are rough then 32 mm is a good choice too. Typical pressures are now in the 60-80 psi range with these wider, higher volume tyres.