Diver

for 6MT it's 35/32 (front/rear) and for 5AT it's 32/32. why is such a difference ?
there shouldn't be any siginificant weight distribution difference between them.
i know they have different tires, but i don't think that exlains it. anybody knows ?

need4spd

Diver, Actually the base 6MT has the same tires as the 5AT.

I ran the 35/32 in my 5AT and it provided a little sharper turn in, and it makes more sense in that most of the weight is on the front wheels.

I think the different pressures are based on how they tuned the two cars, the 6MT is supposed to be "more sport" with thicker anti-roll (sway) bars and brembos up front, hence the higher pressures up front which provided for a stiffer ride, but better handling.

The 5AT was tuned for more comfort (The TSX is the same for MT vs. AT).

All the original press releases from Acura made this distinction between the two transmissions also.

Diver

need4spd,

i guess you're right about the "tuning". and it's navi/non-navi that have diff tires, i forgot about it.

anyway, thanks for the response.

sparky57

Indeed, it is a "driver oriented" recommendation to reduce understeer. It has a similar effect as increasing the size of the rear stabilizer bar.

rw

Lore

No, navi and non-navi have the same tires.

PTN

how about an auto with A-SPEC suspension? i would still run 35 front and 32 rear. need higher tire pressures if you run at higher speeds.

zima76

WRONG! it depends on the year.
04: non-navi and navi have crapy EL42
05: non-navi: crapy EL42
05: navi: michillin

Diver

i thought non navi had bridgestone and navi ones had michelline. at least it was the case some time ago ...

Diver

zima beat me to it

sparky57

Speed really doesn't have anything to do with the recommendation. Think about it - the front tires run the same speed as the rears!

It is common suspension tuning for FWD cars to reduce understeer. I ran higher pressures on the fronts of my '81 Accord decades ago for the same reason.

rw

gbriank

2004:
Navi/Non-Navi - EL-42
HPT - Potenza RE030
A-SPEC - AVS ES100

2005:
Non-Navi - EL-42
Navi - Pilot MXM4
HPT - Potenza RE030
A-SPEC - AVS ES100

badboy

Does anyone know how tire pressure affect fuel economy. Any recommendations on how to get your mpg up using tire pressure?

Thanks

sparky57

Increasing tire pressure reduces rolling resistance and thus improves mileage. You can increase it up to the maximum specification for the tire. The penalty is increased road harshness.

rw

dgracer

I generally take them as high as I can before I suffer ride degratation which for me works out to 38 front, 34 rear. I put 66k on the stock michelins (on my CL-s) this way so it didnt hurt having more air in them.

Gatorfan

I used 36psi on all 4 tires, and squeezed out 52k on my CL-Type S michelins. I actually traded the car with the original tires on it.


Gatorfan

cM3go

my dealer put 32/32 in my TL after they did the B2 service.... thing is... I have a 6MT

SouthernBoy

Not only is the penaty more harshness, but reduced wear characteristics.

I run 34 in the front and 32 in the rear of my 6MT TL. I have closely monitored tire wear and find these numbers to be excellent for this. It also helps that my front end alignment is near perfect since there is no evidence of alignment wear which means that any undue wear problems would be solely the fault of either my driving (which I am quite careful about) or tire pressure.

If you do this for around 10,000 miles, you'll get a pretty good reading for wear.

gbriank

Which tire do you have? I'd move up to 34/34....