Let me break this down for you: you'll want to get your hands on that nitrous 3 upgrade from diamond lake camp, but you'll need trust level 3 first. Clearing out some hordes in highway 97 and doing camp jobs should get you there pretty quick. Once you've got access, stick with the standard tires and engine setup, since fancy upgrades actually make this harder believe it or not.

The real trick is finding a nice open stretch of road near diamond lake, nothing too cramped. Get your bike moving a bit then hit r2, circle and x all at once while making wide circles with your left stick. You're looking to hold that drift and nitro combo for about 5 seconds, which might take a few tries since the tracking can be a bit finicky.

Tip: this works just fine in dry weather so don't worry about waiting for rain. Some folks say tight donuts are the way to go but they often don't register properly just keep it wide and smooth. If you're having trouble getting trust level 3, knock out some story missions first, and maybe clear those hordes with the chicago chopper if you've got it unlocked at wizard island. Just keep at it and you'll get that trophy before you know it