Found on FB:
Reward: McLaren MP4/4 (worth 950 Gold) and a total of ? Gold.
It's an 8 day event, starts on December 24th and is available until January 5th (last day to enter the Event is December 29th).
First off all you must take in consideration that the event has Recomended PR... not mandatory... so IF you have (very) good driving skills you can win the car with a much lower PR than the Recommended...
BUT you must take in consideration this is a Formula 1 car... so it handles different from other cars... for instance, when you release the trothle the car reduces speed very fast... you should practice with the Ferrari F14T or 412T2.
It is still too early to know the Recommended PR but (once again ;) ) everything at 3s (3333333), wich gives you PR 104,9 (maybe 105) investing 485 Gold, should be enough to finish the event. *
The MP4/4 as a base PR of 93,8 and the max PR with R$ is 97,4.
For the Career series (MP4/4 Historia bonus series in Legend, unlocked when you earn/buy the car) you need PR 108,0 wich means an almost fully upgraded car (5444343) investing 1290 Gold.
With all 3s you may be able to collect 75% of Career series rewards.
To fully upgrad the car (PR 108,5:6444343) you will need to invest 1.725 Gold coins.
As usual here are some of my calculations for the PR:
108,5: 6444343, 1.725 Gold (Fully Upgraded)
108,0: 5444343, 1.290 Gold (100% Career)
105,9 (106?): 5333333, 680 Gold
104,9 (105?): all 3s, 485 Gold
97,4 just R$
93,8 Base PR
For the Team Challenge on December 31st, the best option for the overtakes is 13-3 in the Career series: 9 laps on the Dubai Oval so you need to start the Event on its 1st day to have enough time to open your way to Tier 13...
A big thank you to Johnny John for the upgrades tree chart and Event info.
© Paulo Damião
* As an example for the One-77 the recommended PR was 68,4 and all 3s gave 67,9 and Jan finished with only PR 62,9 (1331311).
