It is expected that you race with a fully broken in, maximum SPEC power car. Below are the steps required and the suggested break in methods. Both suggested methods require you to have B-Spec at level 27/28 in order to enter Endurance Series B-Spec races.
Cars purchased from the Online Car Dealership are fully broken in, regardless of the zero mileage reading.
Steps required:
1) Buy Car
2) Change oil
1) That is is! Your car is now at maximum SPEC power for racing in SNAILS Spec Racing.
Cars purchased from the New Car Dealership will need to be broken in. I’ve read that 186 miles is all that is required. I always break in cars by running them for 200 miles to be sure.
Steps required:
2) Buy car
3) Change oil
4) Use Bob, your B-Spec driver to break in the car at one of the following events.
Option A. With B-Spec level 27 you can enter the car in the Leguna Seca 200 mile race. Start up the race and check back in a couple of hours. Due to all the corners and breaking points, this race takes a few hours to complete. Multiply estimated lap time by 90 laps to find out how long the race will be. Go to step 5 when race is finished.
Option B. With B- Spec level 28 you can enter that car in the Indy 500 mile race (200 laps). Each lap is 2.5 miles, therefore you will only need to compete 80 laps to achieve 200 miles. The average racing speed on this track is very high, thus requiring much less time to complete the 200 mile break in period compared to racing Leguna Seca. Simply multiply the average estimated lap time by 80 laps and you will know approximately how long it will take Bob to complete 200 miles. After 80 laps you can exit the race, but only do so while the car is racing around the track . I’ve heard there are issues if you quit from the pit. Go to Step 5.
5) Go to garage and check the mileage of the car. It should be 200 miles or more.
6) Go change the oil in the car and it will now be at maximum SPEC power for racing in SNAILS Spec Racing.
jk. One day I'll be able to set mine up. Got it, moved, and now no room for it. 
