Tire pressure for the heavy rider
I figure right now that since I own a mountain bike it might be worth tryint to start riding it that way, if even for a bit of fun. Now mostly I ride on roads and I have have the original set of MTB tyres on there. I do own a set of slicks but it seems a waste not to use the tyres that came with the bike - plus it's a pain to switch them over,
Now I tend to run my tyres at the maximum written on the sidewall but I know for offroad you should decrease that for better traction. However, that of course increases the risk of pinch flats from my heavier weight. So, what would be a good pressure value to start at? I'm currently about 215lbs riding a Trek 3900. As for riding, it won't be anything too exciting since I am really starting out, you know...walking up and down the scary hills. I've already ridden around the flatter firetrack type areas OK with the max pressure but even on this style of track I am thinking a reduction would be good.
That leads to another question. If riding on roads at the same (reduced) pressure you would offroad does it increase the risk of a pinch flat compared to riding offroad? The places I would ride offroad are pretty close to where I live, so I would just ride there, on the roads.
Thanks for your help and sorry or being long winded.