Tell you what - don't worry about the stock wheels because you will more than likely change them right after break in. They are very, very, soft tires that shredded to pieces just after tuning and a couple of runs.
I chose to go with Total Racing Connection Grip buggy tires. In fact, here is a copy of what I wrote in a previous thread. The information may help you decide on your future hop ups...
Ok fellas! The Verdict is in......
I took your advice and here's what I went and did.
1. Installed the Dynamite single chamber pipe.
2. Installed the Mugen Air Filter
3. Spent a day tuning.
This car by far one of the fastest buggies I've seen out at our local track. There is a pretty nice triple that I've only witnessed a few cars clear and I was clearing it pretty often. I did buy some new tires since the stock treads pretty much fell off the first day which helped me a great deal.
Since that post I decided to go with the Dynamite Double Chamber pipe. The single chamber pipe is almost identical to the stock pipe which is VERY LOUD! Also, the air filter that is on there is like 90% covered with a blue plastic piece (at least mine was) which limits air intake and is specifically designed for water/muddy conditions. You may want to change that right away since less air = less power.
I bent a shock tower a tiny, tiny, bit and bought the Storm Pro towers to replace when needed.
It's a great ride - have fun! and let me know if you have any more questions.