cheapo tyres on it would worry me tbh, very few members on here would put crap tyres on their Zed, even when putting it up for sale. Have you run a mot history check on it, that'll tell you if it's been looked after generally and also very good service history is a must. Zeds are brilliant cars if looked after but theres a lot of dogs around that have been abused. My advice would be always buy off a member here when possible. Theres a much stronger chance it will have a documented history. And any problems its had has been disscussed on the forum amongst members. Good luck with your purchase.
PS: Hope you've got a understanding s/o, the virus is real and consuming.