Punchy Dan:
The Bridgestones on the front work well for me with regard to keeping a nice square shoulder however the down side is they are bad at trapping small stones in the tread which lead to damage to wire showing ending in a major repairThe Ah31 are not so bad but I do seem to knock the shoulder of a bit ,the Hancook issue is the casings don’t sell well after .
Which Bridgestones do you use on the front Dan, which keep the shoulder square, as the Goodyears on my XF chase both inner and outer shoulders off.