Thenornpo Posted January 18, 2024 Share Posted January 18, 2024 Greetings, I want guidance and would appreciate any help that someone might provide. I just purchased a 2018 BMW 320d Shadow Edition and I am now perplexed on the optimal tyre pressures for this vehicle. Upon inspecting the suggested pressure plate located on the driver's side door, it is indicated that the front tyres should be inflated to 32psi, while the rear tyres should be inflated to 35psi. However, I find that the driving experience does not align with these recommended values. I am receiving a substantial amount of comments from the road. I see a sense of insufficient inflation, and I want to consult with someone who has the knowledge to guide me on the correct path. At now, I am use the following tyre configuration: Tyre size: 225/40R19 (equipped with run-flat technology) Back tyres: 255/35R19 (equipped with Run Flat technology) Assistance in any kind would be much appreciated. Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 Link to comment Share on other sites More sharing options...
Freelele Posted January 18, 2024 Share Posted January 18, 2024 Those tyres are designed for runflats. You haven't mentioned the kind of tyres you have, but even for runflats, I used to maintain a tyre pressure of 36 psi for the front and 38 psi for the back. For non-runflats, I would increase the rear tyre pressure to 40 psi and keep the front tyre pressure at 38 psi. However, this is a matter of personal preference.Although all of mine were equipped with diesel engines and had six cylinders. Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 Apologies, the vehicle came with run-flat tyres when I purchased it from the BMW store. Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 Are you referring to the tyre temperatures of 36 degrees Fahrenheit and 38 degrees Fahrenheit? Doesn't that indicate that as they warm up, the pressure will become too high? Link to comment Share on other sites More sharing options...
Freelele Posted January 18, 2024 Share Posted January 18, 2024 I have consistently had success. Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 Thank you for the information. Yesterday, I conversed with around three tyre businesses. Interestingly, one of them had a vehicle identical to mine, equipped with the same tyre configuration. The individual informed me that the automobile had 38 tyres both in the front and rear. For the time being, I will adhere to your suggestion. Link to comment Share on other sites More sharing options...
CrownChikk Posted January 18, 2024 Share Posted January 18, 2024 Could you verify the dimensions of your tyres? Is there a 255 tyre size on the rear? Link to comment Share on other sites More sharing options...
CrownChikk Posted January 18, 2024 Share Posted January 18, 2024 Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 I appreciate your assistance. Interestingly, the majority of tyre shops (I have contacted around 7 as part of my study) recommend inflating the front tyres to a range of 36-38 PSI and the back tyres to 38 PSI. Link to comment Share on other sites More sharing options...
Thenornpo Posted January 18, 2024 Author Share Posted January 18, 2024 Apologies, but here is the configuration of my tyre: Tyre size: 225/40R19 The rear tyre size is 255/35R19. Thank you. Link to comment Share on other sites More sharing options...
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