According to the label on the driver side door jam, tire pressure should be 32/29 front and rear respectively. I just recently bought some non OEM tires. Should I stick with the same tire pressure?

 

Yup! Same size, but different type dosent require any differ air pressure. Run stock and have fun

 

Don't be dumb like me, constantly check your tire pressure

 

Seems soft and slow. The car has recommended settings for best performance huh. I like the roadraceengineering information.
http://www.roadraceengineering.com/e...evoweights.htm
The car has 60 F / 40 R Balance
Then you get 1.5 (F)to 1 (R)Ratio
Now Mitsubishi realizes the front is heavier and wants to balance out a little by making the front rate softer than the rear
The springs are 1 (F) to 1.25 (R) Ratio
Now you get weight shifted to the back slightly when turning. The rear tire pressure being lower is supposed to give more traction? It seems to me just to follow the shifting of weight theory above since 32/29 yeilds 1.103 to 1, Similar to adding 1.5+1 forthe front) to get 2.5 and adding 1.25 and 1 to get 2.25 for rear and dividing them to get 1.11 F to 1 Rear
So now you are almost balanced but not quite. Looks like you need to add a .25 to the rear somehow. This could be done by adding more weight there (No) or slightly higher spring rate there, or tire pressure (Almost Free).
Again
1.5 to 1 Weight
1 to 1.25 Springs
1.103 to 1 Tire Pressure
Add em up Front and Rear the divide and you get 1.108 (F) to 1 (R) distribution That must be seen as Favorable.
Lets make the front 3.5 and the rear 3.5
We will need tire pressures of 1 (F) to 1.25 (R)
Some to get this are 32 Front and 40 Rear, 28 Front 35 Rear, 30 Front 36 Rear, any 4 to 5 ratio.
Will this work? In theory. I tried to do factory and it seemed the rear was too mushy and the front too responsive. So that makes this formula look better. I am going to try 32 40 and see what happens.
Most everyone else thinks opposite and want the front rear ratios nearer to 60 40

 

ummm ... you're the tire dude Neal, but can you clarify that? I put winter tires on my car, and found that the lack of the super-stiff sidewall (that the stock tires have) required inflating the non-stock tires to higher pressures to get the same handling feel. It felt like the winter tires were rolling over when cornering without the higher pressure. Comments?

Lac

 

Rear 29 Front 32
The Evo seems to handle many configurations well. That is untill you make fast lane changes or want to see how the car slaloms. Then it becomes apparent that the car better have more pressure up front. The higher pressure makes it easy for the tires to come lose. The lower makes them stick. The car will be less prone to oversteer if the back tires are sticking. As mentioned before, most drivers need understeer for best results.

 

yea if they are OEM they should be treated like Oem with the stock tire pressure. .... 29/32

 

I agree with most that the type of tire doesn't matter, but I think that the stock pressures are a little low for the OEM Advans. My fronts wore out the inner and outer edges at 4000 miles. I had the car aligned and it was within spec. I went to 35/32 and rotated the tires and the "new" fronts are barely showing any wear at the same mileage since the rotation.

I would check your pressures every week (I have since it was new, given how much these tires cost) and I think upping the pressure (but keeping the same front to rear differrence of 3 psi) will make the tires last longer. I cannot tell any difference in the handling at low or high speed in regular or spirited driving.