I am writing today to ask you a question about my tires. I own a specialized hardrock pro 2003 and i live in the suburbs of chicago. (glenview,mortongrove,niles,parkridge,desplaines) I ride my bike with 30minute intervals. My tires are the stock ones. Specialized enduro 26x2.2 and they run smooth. My question is do you think that i should buy different tires such as 26x1.5? Would it be worth it? Most of the time i ride my bike on sidewalks,sidestreets,pathways,parks,behind stores and other various places. However sometimes i ride on the construction sites with a whole selection of rocks and bumpy ground . Should i upgrade for the 30-70 dollars? I would probably go out for a lot longer rides if i got these. What do you think?