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My front wheels are suppose to be 35psi. If i put them to 40psi, would my fuel economy improve 
?
?Over inflated tires?
- Thread starter Johnnytoxic
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You could put any saving towards new front suspensionMy would my fuel economy improve
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Cmon, they have to specify for joey general public. Same reason why the manufacturers don't make your car perform as good as it can do and why superchips exist.
Obviously it will be a firmer ride with higher pressures, yes you would have to be more careful, more chance of skidding in the wet.
No...It should wear out the center of the tyre faster
Soldato
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To answer your question, Yes your fuel economy will improve.
At the expense of wearing your tyres faster and giving you less grip.
At the expense of wearing your tyres faster and giving you less grip.
No, not the same reason at all. Manufacturers have reputations to uphold, warranties to cover and emissions standards to meet - that's why they don't squeeze every last bhp out of an engine.
Tyre pressures are chosen to balance out several different factors. Raising the pressure will lower rolling resistance at the cost of grip, tyre life and ride comfort.
My missus once managed to get over 70 psi in the front tyres of her old Clio, despite being told to put 30 in them...not bad for (iirc) 145/13's. Bloody thing felt like it had power steering when it didn't!!!
Funny I should be reading this thread tonight.
The old pugs steering was feeling a bit heavier than normal having not been driving it for a week or so, sure enough when I checked, they were down to 20 psi.
Now Fronts are pumped back up to 40psi and rears 36
I can palm the steering wheel again now.
MPG for the win.
The old pugs steering was feeling a bit heavier than normal having not been driving it for a week or so, sure enough when I checked, they were down to 20 psi.
Now Fronts are pumped back up to 40psi and rears 36
I can palm the steering wheel again now.
MPG for the win.
And what happens when you're out on a drive or say on a track and the pressure climbs!
Firstly an expensive waste of a k-pro with a generic map now putting silly pressure through your tyres...... Come on!
If you want to look at playing with your car then you should really read up on the subjects and understand how they work. Doing such things isn't as easy as 'Do X mod' make 'Y' better, you have to think of the whole care as a variety of dynamic systems all affecting each other in a huge variety of ways.
Please just source a books on how engines work; '4 stroke performance tuning' is pretty good and also pickup one on suspension design. You will learn a lot and might actually talk some sense for once
Soldato
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Soldato
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- Shakespeare’s County
Considering we dont have cross plys thats not really the case anymore.
No big deal really. I used to run my 13" tyres way over book pressure, for different reasons though. Difference in grip was negligible and they did not wear out quick in the centre.
If it isn't complete garbage to start with though, why mess with it.
If it isn't complete garbage to start with though, why mess with it.
In a nutshell many car manufacturers haven't changed their pressure recommendations inline with new tyre technology and modern belted radials wont bow in the centre if overinflated by a small amount.
I always run my car tyres at the maximum pressure recomended for heavy load and high speed as a minimum, sometimes higher. 40 psi will almost certainly increase MPG with negligible loss of grip or increase in tyre wear.
Underinflation is dangerous, but overinflation within the tyre maximum is no problem, although it is subject to diminishing returns with regard to MPG. Try to balance ride/steering effort and grip.
I always run my car tyres at the maximum pressure recomended for heavy load and high speed as a minimum, sometimes higher. 40 psi will almost certainly increase MPG with negligible loss of grip or increase in tyre wear.
Underinflation is dangerous, but overinflation within the tyre maximum is no problem, although it is subject to diminishing returns with regard to MPG. Try to balance ride/steering effort and grip.
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You should do a bit of research matey. The tuned map that is on the car now, even though it's generic and not custom to my car, it is based on a standard EP3 Type R like mine.
The difference between standard and now is worlds apart. Runs less lean, i've noticed a massive difference with fuel usage and low down torque. It's a completely different car and I would never go back. You seem to think KPRO is only for people with Superchargers and Turbos to get anything decent out of it.
it gives 30hp in midrange and 15hp at peak. From me that has one and live day to day with it, I cannot recommend it enough to people with DC2/DC5/EP3/S2000
Lower VTEC / Better Fuel / Lower torque, much better than spending £500 on an exhaust/intake. Yes if I had the money I would have those too
Thing is when I come to sell it, I will be seeing pretty much all of my money again, the ECU's hold their value.Just testing out my HD 808 camera.
Smoother power delivery from the EP3, ignore the long change down, thought the car opposite was going a bit quicker than he was.
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