Pro-Line Dirt Hawgs
 

I've just got some of these for the rear wheels on my B4 and WOW what a difference! I use it on-road and they had so much grip even when it's freezing out.
It's only got a 17x2 reedy motor and it's cracking 32mph :O Quite good considering the temperature and what it's got to work with :P

Yeah they are great for concrete neighborhood bashing.

I used to use a set of the ancestors to the Dirt Hawgs, the Road Hawgs (I think it's still being made, not sure).

They'll even work on a very hard-packed dirt surface. Just be careful of tall grasses that ends up in your drive-train!

Haha yeah im keeping away from the wet grass at the moment :D
Sorry one question, is it worth getting them for the front? It's an extra £15 to spend and i wasn't sure whether they were that nessacery seeing as the steering is ok already for what im using it for.

Don't bother with them for the fronts, they are very tall. The ribbed tires that come with the kit won't wear out that quick.