As TA have helped me gain achievements,thought I could add to what's been mentioned above for the achievement
Do not attempt this ur first season,or probably second it third for that matter,u will get crucified and disheartened,it is an actually easy enuff cheev under right conditions
Practise practise practise practise,u have to know every track down to a tee,knowing all the sweet spots and the hell spots is essential,I attempted this cheev on 5th season n still got caught out every now n then on some tracks,
Turn off autosave,imperative as mentioned before, U CAN save car set ups even when u might have some aids on,but like others have said,its essential you turn all aids off before crossing the finish line of a race so expert pops back up
Typically,I started a weekend on expert,obviously,did practise,went straight to qualy,aids off,back out to paddock n then save,it helps with those really frustrating races
I personally leave TC and ABS on,but honestly,the AI is so tough and each race is so unforgiving that leaving aids on is no big deal
Ideally,start the season as number one driver,you need to get upgrades ASAP,The car kinda sucks at start of season,but once upgrades come it'll become much easier,well,kinda!
Write off Spanish gp and Monaco,there seems to b glitches best q I could manage was 12th and 19th respectively,
Stick at it at the start even if ur not finishing very high, from memory I think my start was 3rd Bahrain,1st oz,6th KL,5th China, n bad results Monaco n spain,once u get to turkey it gets lot easier,ur car will have developed a lot,much quicker,poles will come and ull do alright
Around monza I think the pressure came off,for me neway,u can start selectively taking out opponents all throughout season,but here at the business end u really c the dividends,a quick.nudge or soon of certain cars into barriers,done carefully of course,and ur lead will grow n grow,
By taking out specific drivers throughout season I was actually able to just crash out from Singapore onwards n still win championship,but know your math! And it should go without saying,SIGN A CONTRACT BEFORE STARTING TO DELIBERATLY CRASH OUT, u will get sacked otherwise!
All in all this is a bloody hard achievement but very do'able,it requires time to.learn n patience, plenty of it, incur a penalty,ur better off restarting race TBH, same with bad spins cause its neigh impossible to catch cars once they have empty track ahead
Don't try to use set ups found on the net,everybodys style is different,ur just going to have to learn what yours is!
It's some feeling when u do get this cheev,cause even though wit aids on its cheating,its still one of the hardest cheevs I've ever done! Stick at it,
Any q's feel free to ask,I just tried to give my opinions back to community,any errors are mine!good luck