Will the following stagerred tire set up work on the Evo (in the same model tire):

(Front) 255/40-17
(Rear) 235/45-17


Thanks in advance

 

There is going to be a slight difference in overall height between the two tire sizes, but it would be minimal. More than likely it would work, but what is your reasoning for doing it? I've seen gymkhana cars set up like that, but never a street car.

 

If anything they should be flipped (rear to front and vice versa) ... and what are you trying to achieve with the fronts wider? More understeer?

 

reverse staggered setup is for time trial on a road course. It will give more grip for better acceleration at apex exit. This technique is often found in a lot of JDM time trial attacks. Very popular setup on EVOs.

cal

 

http://www.1010tires.com/TireSizeCal...?action=submit

The diameter difference b/n these two tires is 1.15%. How will this affect the tc/diff, etc.? Many thanks in advance...

 

Wider front tire = more front grip. More front grip = LESS Understeer.

- Steve

 

I want to be able to throw the car into corners and accelerate out of corners while on throttle. This set up should get rid of the "push" feeling the car has on the stockers on high speed cornering (at times I am inducing "Brake Drift" to correct the angle and trajectory of the car in these turns - it's cool and all but not very settling at high speed and the car looses speed logically). The Hotchkis Lowering Springs help but this should do the trick IMO.

Any thoughts out there?

 

From experience I can say that on an 05, the active center diff will negate the benefits of the staggered tire setup. It may work on an 03-04 though.
Mark

 

Are you going to run a wider front wheel as well?

-Ron

 

Nope - this willl be on the stock Enkei's

 

Bump from the dead...

Looking to go with 255/40-17's on the front and 235/45-17's on the rear (stock wheels all around).

Rolling diameter seems pretty close. Any input would be appreciated.

 

Have you thought/tried a rear sway bar yet?

 

What year is your car as the 05s gain nothing from this due to the ACD.

 

that is wrong... the stagger is correct...

the staggered heights, if you truly can't get them to be any more close will not affect the center diff that much. there will be a difference in rolling speed but both are still moving at relatively the same speed... the viscous fluids will not bind under such a small difference, they bind under a torque difference. or if two wheels straight up aren't moving and two are being towed

that being said... you have the wrong idea. you should be staggering your wheels and running the exact same tire, the front wheels being wider by half an inch and the rear wheels being narrower than the front by half and inch. this produces a squared tire profile in the front and a slightly bulged tire profile in the back which consequently does not yield more grip... it actually yields less (as per john at rre, i'm deducing this from the skidpad tests of tommy p's car for ultimate street car challenge this year and john's comments about them) but you WILL get a more even break away from the rear so your oversteer is more gentle. this is all about nuance in handling and not raw grip.

if you are running an acd equipt car this subtle difference in rolling speed WILL wear the clutch plates.

 

Shouldn't be a problem.

It sounds like you want the car to undesteer less or oversteer more. If so and you want to do this the cheap way, take some camber out of your rear tires. I believe the factory setting is around 2degress (neg). have it set more positive. Around 1.25-1.5 (neg). This will make the car more tail happy. Which sounds like what you want. Otherwise invest in a Hotchkis or Cusco rear swaybar.

Anywho, the tire combo you list is the correct "staggered combo" if you were to stagger. But make sure you keep them the same tire manufacturer.

Oh one more thing, to really get use out of the staggered setup, you should stagger the the wheel widths too.