Hello, I hope someone can help me. I ordered new tires last week and had them mounted on my aluminium rims by a tyre dealer (workshop). I picked up the tires there and then mounted them on my vehicle myself and wanted to adjust the air pressure to 2.5 bar. I noticed that all the tyres were pumped up to a pressure of 5.5 to 6.5 bar. In order to get the tire on the rim, a higher mounting air pressure is required. Now I have read on the internet that the jumping pressure can be max. 3.3 bar and the max. setting pressure 4 bar, as otherwise there can be damage to the tyre or especially to the tyre bump. If the jump or the correct press seat cannot be reached with these pressures, the assembly process has to be repeated from the front. Now my question: Can the too high mounting air pressure have damaged the tyres? The tyres are Ra insport 3 from UniRoyal (225/40 R18 92Y XL with rim rib summer tire). On the tires is a maximum air pressure of 40 PSI, i.e. approx. 2.76 bar. Even if you can take 150 % of this value as a maximum mounting air pressure, then that would be only 4,14 bar. Now my guess is that the tyre assembly was executed improperly. Maybe no lubricant was used and so it was only possible with a very high pressure that the tires “set” or wi I didn’t see any residue of a lubricant on the tires at the rim of the rim. Since I drive a lot of highways and often speeds over 200 km/h, my worry is that the high pressure has not visibly damaged the tires and it could come to a tyre pitcher at some point. If someone knows it it would be nice to write whether there is a danger or the worry is unfounded. Thank you in advance for answers.