So i got the urge to ride a bike...dont know where it came from ....well I take that back, yes I do, sort of. I was watching an episode of Ruby, ya know, the 300+ lb woman losing weight on the Style channel? She was riding a bike and I thought to myself " I no bigger than her, and if SHE can ride a bike then surely to God I could too!" And from there it was stuck in my head to ride one. Once I get something in my head thats all there is to it lol. Now being a single mom of three, funds are limited to say the least. So i checked out CL in my area (north east tn) and finaly found something that *looked* decent and was affordable. Its nothing fancy or as nice as some of the bikes Ive heard mentioned here, but I like it lol. Its a 26" Women's Roadmaster Mountain Sport SX....prbly purchased from Walmart. Bike, helmet and pump for $30. I was too embarassed to even try it out in front of the girl I bought it from. Didnt try it til later that night, in the privacy of my yard and in the dark. Lucky for me its true, once you learn how, you never forget how to ride a bike...and the damn thing didnt collapse under my weight...bonus points lol. It felt GREAT! However the seat on this thing was terrible and I only rode for about 15 minutes...and could barely walk the next day lol. Can we say COOTCHIE PAIN? Omg! Yest I bought a new seat, Schwinn delux stress free seat, but havent installed it yet. I also discovered yest that my back tire is FLAT! Crap. So here is my questions for you guys...Im 5'9, appx 365 lbs with bad knees and need to lose weight. I do intend to have weight loss surgery in the near future(with in the next 6 mo) and really want to start riding this bike with my kids, easy stuff tho, nothing fancy, no races or tours, just fun. Will this bike be ok for me? Here is a link to it http://www.walmart.com/catalog/produ...7#BVQAWidgetID. It has 36 spoke tires and they look brand new, in fact teh whole bike does, she just got it this past spring. I can tell teh brakes need adjusting. I just want to take care of it and do NOT want to risk getting this thing out in public on a trail and have it collapse under my weight or blow a tire etc. If it is ok for me, what should I do to it, take it to a LBS and have them look it over? Get better tires? If so what kind and how much would it cost me? I think this post is kind of rambling and if so Im sorry...this time change has me so tired lol. Any help will be appreciated. Thanks!