Quote:
Originally Posted by jimmy1
I found this one out for maintanance on my 2007TCH.
What's tire rotation?
I normally look and touch my tires to check if they are low on air or not at risk to get flat while driving.
Some talk about tire pressure, what's this?
Is there alternative ways to check to see how good my tire is other then touch and feel?
what's tire inflation?
I did my synthetic oil change at my TCH dealer and paid about 100$.
you think they have done all the following?
 Replace engine oil and oil filter 1 Rotate tires Visually inspect brake linings/drums and brake pads/discs
Additional Maintenance Items for Special Operating Conditions:
Driving on Dirt Roads or Dusty Roads Inspect ball joints and dust covers Inspect drive shaft boots Inspect engine air filter Inspect steering linkage and boots Tighten nuts and bolts on chassis Applicable Footnotes:1) Reset the oil replacement reminder ("MAINT REQD") light after replacing engine oil. Replace engine oil and oil filter 1 Rotate tires Visually inspect brake linings/drums and brake pads/discs |
As Tideland said, the the TPMS (Tire Pressure Measurement System) notifies you when you have low tire pressure -- which causes increased wear and poorer economy. Another thing that the tire pressure does is insure that the tire sidewall stays properly attached to the rim, thereby, maintaining the proper support for the tire. Look at you wheel. See where the tire and the rim meet? That small area keeps the tire properly attached by the internal tire pressure forcing the bead of the tire against the rim. Now this pressure also helps to maintain the integrity of the tire. If you do not have enough pressure, on a tight turn (say exit ramp of interstate), the outer front tire sidewall could pull off the rim and the tire would just completely collapse. Not good.
Now a caveat about the TPMS: It alerts you when the tire pressure drops to less that 75% of the tire pressure when it was set. If you the system when your tire pressure is say 28 psi, you won't get an alert until that tire drops to 21 psi! TCH recommended pressure is 32 psi, so alarm = 24 psi. Many of us run 40 to 42 psi (alarm is therefore ~ 30 psi). Personally, I would prefer to have the the tolerance a lot tighter (say 10 % loss, or even allow customization), but the TPMS is better that nothing, IMHO.
Now, about your oil change price: Here in Fredericksburg, VA, USA I paid $49.95 for: Filter, filter gasket, 4 quarts 0-W-20 Synthetic oil. Included brake inspection. Tire rotation was 19.95. Granted, I could have done all this on my own.