Wide front Wheels, Eh?

[andy110m]

Hi Guys. I was looking at ordering some wheels and tyres for the gig at southport. So I know what tyres I want but not what wheels. I got the parts list out and found a problem.

Rear, yellow mini pin, with white losi dished wheel, LOSA7105. No problem.

Front, yellow mini spike, with wide white front wheels, LOSA7005. Here I have an issue. Why do I want wide front wheels and why can't I find any standard size white front wheel listed?

Hope you experienced off road guys can help. Its not this hard in 12th scale. (Mind due that said 12th cars don't jump either)