B type spindles, what's the problem?

[SSDan]

I've seen several negative comments about changing from the stock spindles I have to a B style using GW uppers and lower A arms. What problem does it cause? Is it something major?

What's the solution for someone running 15" mags? I may upgrade to 17" in the future, but for now the 15's stay.

I also notice several members have the b style on their vehicles.

Thanks,

Dan