What's the max tyre you'll be wanting to fit?
I have this Light Blue Wolfson Sport, practically new, takes 33mm wide tyres WITH guards, I know it's not disc braked but unless you're doing insanely muddy trails then that shouldn't be an issue.
Decent 20" bottom gear 24-32, I tried 35mm Conti speed cyclocross on them and they fit https://www.lfgss.com/conversations/362890/#comment15954693
What's the max tyre you'll be wanting to fit?
I have this Light Blue Wolfson Sport, practically new, takes 33mm wide tyres WITH guards, I know it's not disc braked but unless you're doing insanely muddy trails then that shouldn't be an issue.
Decent 20" bottom gear 24-32, I tried 35mm Conti speed cyclocross on them and they fit
https://www.lfgss.com/conversations/362890/#comment15954693