Board Thread:Game Discussion/@comment-26829117-20180113114518/@comment-26829117-20180113121734

Adityam08 wrote: How much upgrades or gold are required to get the sponsorship reward in NASCAR all star series, is it possible to get it just by the RS upgrades or simply using the gold to get the sponsorship reward right away?

You can complete NASCAR All-Star Series with just R$ upgrades but I don't think there are any sponsorship rewards in that series.

RR3 Wiki:Upgrades Strategy For 100% Completion