Bests & Worsts Reviews from Amazon

This is a great product concept. I've owned 2 of the smaller crazy carts and they're great. The XL is a ton of fun but has a massive design flaw: they use the same wheel and 200x50 tire for the original and the XL. The XL carries much more weight so the tire wears out quickly. The bigger problem is that when the tire blows, you're not driving on the rim of the wheel like you'd expect...you're driving on the plastic chain guard (which cracks or breaks) and the sprockets of the gearing. My kids ride them on a tennis court, and the XL tires last just a few days (3-5 days of 20 minutes use each - an original crazy cart is more like 30 days of daily 20 minutes use on a tennis court per tire....tennis courts are tough on tires). Once the tire blows (and you don't always notice it immediately), the gearing gashes up the court surface. So I've had to return 2 XLs and wait for a bigger front wheel. Please address this. I'll buy 2 more (and pay more) if they're fixed.