kimseongjae

Hi, any suggestions as to what sot of tire pressure I should keep in my 460 L AWD with 18 inch rims?

Does tire pressure impact ride and/or handling? Does tire pressure impact tire life?

Thanks

phil

IT DEPENDS ON THE TIRE ( BRIDGESTONE OR DUNLOP). I THINK THE BRIDGESTONE RIDES LITTLE FIRMER. ALSO, HOW DO YOU LIKE YOUR RIDE. SOFT AND CHSHY OR LITTLE FIRMER TO FEEL THE ROAD LITTLE BETTER. OVERALL, YOU ARE NOT GOING TO GET THE KIND OF HANDLING FROM BMW. IT'S A DIFFERENT CAR FOR DIFFERENT PEOPLE.

I LIVE IN CALIFORNIA. I HAVE FOUND MY OPTIMUM RIDE PRESSURE AT 37/38 PSI COLD- FIRST THING IN THE MORNING. IT WILL WARM UP TO ABOUT 42-43 WHEN IT'S HOT.

I AM RIDING ON KUMHO PLATINIUM LX- WHICH IS BETTEER TIRE WHEN IT COMES TO HANDLING THAN DUNLOP. DUNLOP RODE VERY SOFT.

:( Just spent $128 at the dealer for an oil change on a Lexus LS4 60. Is there a less expensive way to change the oil?

I TOO WAS SHOCKED TO FIND THE LEXUS FOLLOWING THE FOOTSTEPS OF BMW AND BENZ WHEN IT CAME TO REG. SECHEDULED SERVICE. I CALLED THE DEALER TO FIND THAT ONLY THING REPLACED ON THE CAR WAS THE OIL AND THE FILTER FOR $180- I LIVE IN LOS ANGELES. ALL OTHER SERVICES PERFORMED WAS JUST CHECKING. HAVING BEEN A PREVIOUS TOYOTA OWNER, NOT MUCH GOES WRONG WITH A CAR- IF IT DOES, THEN YOU KNOW TO TAKE IT TO A DEALER.

JUST TAKE IT TO YOUR REPUTABLE CAR REPAIR SHOP. IT DOES TAKE ABOUT 8 QT. OF OIL SO MY SHOP CHARGES ME $40. DO NOT TAKE IT TO A PLACE LIKE JIFFY LUBE. MOST OF THE WORKER WILL NOT BE FAMILIER WITH EXTER STEPS TO IN ORDER TO ACCESS THE OIL FILTER WHICH HAS NO CANISTER.

I also put the pilot sports A/S + tires on my 460 L. I purchased them from Costco and they were filled with nitrogen, instead of compressed air. I love the tires and the deal I got from Costco. They were about $1000, out the door, and come with a road hazard warranty.

My car came w/ Bridgestones and had them replaced with Dunlops at the time when I purchased the car from the dealer. Having recently replaced my tires with Kumho Ecsta LX PLatinium. I found both tires to be the following:

Dunlop:

Good tire

Too Expensive to replace @ $220+tax+mount and balance

The ride was quiet when new but progressively made road noise in cluding thumping and un-even tire wear towards the end.

Ride was too soft ( even at 42psi)- especially @ swipping turns and during lane change. Otherwise, nice, comfortable, tight ride in a straight situations.

Towards the end (30,000mi.), it started to wear uneven and made thumping noise. The alignment checked out OK when I replaced the tires. So, it was not the alignment problem. The Dunlop was replaced at 35,000 mi.

Kumho:

Excellent tire considering it was $700 out the door. I've considered all tires including Bridgestone Serenity.

The tire is just as quiet as Dunlop. even with more agressive tread pattern

The ride was tighter- better in lane change and in high speed turns

Yet, Still maintains nice comfortable ride. However, I found the Kumho to be little more bouncy on concrete highways with expansion joints. On other road conditions, it was about the same on straight roads. I found the best overall ride at cold tire pressure = 37/38 psi and it maintains 41/42 psi when it's hot.

60,000 mi. warr. with 2 year roadside assistance.

Sorry, I could not comment on wet weather handling- I will not see rain for another 6 month in L.A.

Overall, I was not disappointed with Kumho and still managed to saved $300-$400.