monkeyhanger wrote: ↑Tue May 03, 2022 7:01 pm
Yes, 5.9mm starting point, meaning that your 4mm tyres have lost 1.9mm in doing 5000 miles, you've got another 5000 miles to get down to 2mm, so you'll be fine to do your 2000 mile French trip.
Yes - my 18" Bridgestones also measured 5.9mm when new - within the limits of measuring error