N Nick New member Sep 20, 2009 #1 i just got to tier 4 at driver level 15 and i bought a tier 4 cars but it wont let me upgrade it do i need to get more starts first or something? please help thanks!
i just got to tier 4 at driver level 15 and i bought a tier 4 cars but it wont let me upgrade it do i need to get more starts first or something? please help thanks!
