Most likely cheap or worm tyres
That said even with brand new good quality tyres it is extremely easy to get the back end out
Almost all the accident posts on here start "I was exiting a rounabout, gave it the beans and just lost it"
New clutch & fly & exhaust gone at the usual point and blowing....
£800 for a clutch £ fly from Zman + fitting...
£50 weld on the exhaust or £350ish for backbox £800ish for complete new aftermarket system
Lots of choices all of them expensive
As I said on the PM all looksgood but just check out the fog light when you fit put the fog in one side and the oem in the other and compare.... I wasn't happy that the LED was bright enough so I kept the oem red bulb...