Talk:Porsche 911 GT3 RS/@comment-32225178-20170623142849/@comment-27406492-20170623172550

I think you can almost always buy more keys cheaper than you can using the tokens you would use to unlock a lab. Plus you can do it at the time of your choosing  rather than coming back every 3 hours to run a few laps. Like on the last day burn a double tank and buy as many keys as you need while triple boosted.

Count backwards from the event close allow for about 15 keys a day, and 3 keys per race. That is 5 races a day completed. So thats 20 races in 4 days. Should work out because in this one we only have 17 racess to complete.