So I bought three cars about a year and half ago. My kids were to small and did not know how to drive them well. So I put them away for about a year. I took them out the other day to play with my kids. The Rucks needs a tire due to it having a crack on the side wall. I of course beat it last year when I got it. Before I put it away I noticed a decrease in speed. Took it out yesterday and it was a lot slower than my kids Roost. I think I fried the motor. What motor can you recommend not to break the bank and not spend to much money on it? Also where can I buy tires for the cars? I think the Roost tires will fit the Ruckus so I can go with what ever I can. Thanks