Board Thread:General Discussion/@comment-10090661-20141028101100/@comment-76.91.176.54-20170211163900

Using the GTA Spano and Ruf CTR 3 on mastery levels 14 with double credits both yield a minimum of 11,000. The Spano level 14 is faster and easier on the Dubai course and I've finished as fast as 50 seconds. The CTR 3 level 14 is harder because it's an unplugged race and it tales a bit longer also. I've used both of these to get some high level cars.

Also, maxed out Renault Sport R.S. 01 on season 9 also pays 11500+ for first place using double credits, but is on Route 375-1 and takes more than 1:10 to diminish.