Jump to content
SAU Community

Recommended Posts

Hey, Im sorry if this sounds like a really stupid question that anyone with a license should know, but I have just never been sure.

When your tyres say 55PSI Max press, does that mean it would be best for me to fill it to 55? Or does it mean thats just the max it can handle, but I should be putting in 50?

Or am I way off and theres an ideal PSI such as 43 for certain sizes or something like that?

I know your tyre pressure has an affect on petrol consumption, but im also told that your tyre pressure can have a HUGE impact on your speed and acceleration, so I was wondering about all this.

Thanks for any answers

Link to comment
https://www.sau.com.au/forums/topic/318811-max-psi/
Share on other sites

  Ericjayrol said:
they're just the stock tyres, so im gonna assume the figures that cancer gave were right under that assumption?

I was recommended 38-40psi on 235/45/17 if that helps, 40psi was for an advanced driving course at Sandown, but everyone seems to recommend a slightly different amount so you will have to experiment :P

Link to comment
https://www.sau.com.au/forums/topic/318811-max-psi/#findComment-5211170
Share on other sites

Experiment mate, but always gauge it on the tyre profile rather than wheel size.

With standard tyres anywhere from 32-36 will be fine. Low profile (35/40) anywhere from 38-44 is not uncommon.

When you get to know more about it, you will use different pressures for different situations. A good test you can do is to inspect the tyre wear after some time...if you have too much wear on the sides of the tread it means your pressures are to low, too much wear on the centre of the tread and your pressures are too high.

Link to comment
https://www.sau.com.au/forums/topic/318811-max-psi/#findComment-5211364
Share on other sites

There is quite a bit of info on this around the web, a lot of people state the best tyre pressure for your tyres in terms of performance, wear and comfort is the MAX pressure stated on the sidewall of the tyre minus 10%. So under that assumption it would be 55 - 5.5 which is 49.5PSI. That seems a bit high for me, I would stick to between 36-40 PSI cold pressure.

Link to comment
https://www.sau.com.au/forums/topic/318811-max-psi/#findComment-5221250
Share on other sites

WOW!

Are you guys serious?

I run 45-50psi on the rears at the track when I go drifting.

And about 32-34 at the front

(16" rim, 205-55)

It depends very greatly what press to run.

Factors like wheel alignment, driving style, driving conditions, quality of rubber and what you want to get out of your rubber.

Have a look at the tyre wear on the rubber, where is it wearing first? Is it an even wear? Is it feathering on the tread blocks?

For daily driving I wouldnt recommend more than 36 just to try limit fuel consumption.

Tyre press is a comprimise betwee grip and tyre wear. Do you want you rubber to last? or do you want it to grip?

Link to comment
https://www.sau.com.au/forums/topic/318811-max-psi/#findComment-5223024
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • Damn that was hilarious, and a bit embarrassing for skylines in general 馃槀 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
  • Create New...