Originally Posted by Vintage Schwinn

It is not as simple as tire width, as yes, tire width does impact speed to a very small degree, BUT YOUR BICYCLE's GEARING will play a much larger role.

Look at some of the available free online bicycle gear calculators (GOOGLE: bicycle gear calculator)


Basically, if your husband's road bike has the HIGHEST GEAR of say for example 52 front and 13 rear and he is comfortable pedalling away on flat-land or downhill in this 52 front TEETH and 13 rear Teeth configuration.................he's gonna be motivatin' and moving out, AND YOU WILL HAVE ZERO CHANCE OF KEEPING UP WITH HIM UNLESS YOUR BICYCLE ALSO HAS the HIGHEST GEAR of at Least That.