linhtwu

Can you replace tires on an RL with Tech Pack with normal tires instead of run flats? I assume the wheels/rims are the same with tech and non-tech rl's.

lland

No, while from the outside the wheels look the same, they are very different.

LL

Chas2

No, this is what I have found out. The PAX wheels are unique. The wheels are constructed so that the tire will not detach from the wheels when driven for 125 miles.

You can replace the PAX wheel tire combination with standard wheel combinations, but you also have to get a compatible TPMS in there or you will be getting warnings all the time.

You will also have to understand you will have no spare. The tech package has no spare, and the area in the trunk for the spare has been converted to storage. The storage module can be removed, and you can probably retrofit the spare as well.

I understand the PAX wheel tire combo is heavier than the standard tire combination, and 4 PAX = 4.7 standard tires, or what michelin calls equivalent to 4 standard tires plus a spare.

The PAX tires are metric, 245-690 R460 which means that the total height of the tire is 690 mm or about 27.17 inches and the wheel diameter is 460mm or about 18.1 inches. I am not sure what the total height of a standard 17 or 18 wheel tire combination is, but it is probably close enough.

Chas2

Bad information on the wheel/tire combination diameters. Sorry

I fat fingered 690mm in vice the correct 680 mm and then did the metric to inch calculation

P245/50R17 = 26.7 inches
245-680R460A = 26.8 inches

And for completeness, recommended 18" package should use

P245/45R18 = 26.9 inches

See reference material at
http://www.michelinman.com/specs/pilot_mxm4/112.html

sri_gondi

Folks,

A Quick question for the Forum Will Tech car come with a spare at all ? Or not?

Chas2

The 2006 Tech Package, which has CMBS/ACC and PAX, does not have a spare. The spare tire area is replaced with a styrofoam insert that gives you two storage compartments plus a fitted slot for the jack (I think, or some tool kit--I will have to look tonight as I just picked up the car this afternoon).

I sat in and showed my wife a 2007 Tech Package (which is equivalent to the 2006 non tech package) had CMBS/ACC/PAX, and it has the same arrangement, no spare.

The PAX are rated for between 100 and 125 miles driving range with no air at 50 or 55 mph (depends on what you read), which is about double the range for a compact spare at the same speed. The polymer support ring and the design of the tire will ensure that the "flat" PAX does not come off the PAX specific wheel.

The weight of 4 PAX are approximately equal to 4 standard tires plus a compact spare according to Michelin, and is MSRP priced the same way.

vluu

Personally if you can avoid the run flat tires on the RL, I would avoid it. I bought a 2006 RL Non-Tech w/o the run flats and the ride is 15-20% more comfortable and quiet compared to the run flats on the Tech. Package. IMHO

Anyone else agree?

backfire

Rims are not the same. I was told you have to replace both.

sotiri

I disagree.
I have driven both.
This issue is like chocolate vs vanilla.
there is no right choice.