Talk:Porsche 959 (Championship)/@comment-28856025-20170613063538/@comment-28856025-20170613164226

For the 918, it would vary depending on how many EP is needed to get the car:
 * If is needed, and there are 9 Tiers/50 Challenges (ala SV/Sparta EDD),  can be earned per invitation (going up to Challenge 24 each time), meaning that the car would be upgraded to at least 5555 3030 0808 and that the car will be earned in just 7 invitations (minimum 4 days).
 * If is needed, and there are 10 Tiers/59 Challenges (ala One-77/Vulcano/Corvette GS EDD),  can be earned per invitation (going up to Challenge 29 each time), meaning that the car would be upgraded to at least 5555 3131 0808 to reach that challenge and that the car will be earned in just 5 invitations (minimum 3 days).