1991 Mercury Grand Marquis LS 302 FI from North America
Alternator most recently.
The battery was replaced also at the same time.
My father in-law replaced the entire A/C.
System before he gave us the car.
Muffler and tailpipe also.
My father in-law left the car to us when he passed away. It had been very well taken care of, and has low mileage for the year. Everything about this car I love. The more I drive it the better it gets. The alternator went out the first day we had it, easiest I have ever replaced, cheap too. The only problems I have experienced are a slight shifting /finding right gear at 40 MPH. Also the only other thing that really bugs me is when in a turn with any speed at all the tires start squealing. The 215/70/15 seem way to small for this car.I'm thinking of switching to a late model stock 16" steel wheel and police size 225/70/16. if anyone knows the fix to these problems please contact me at firstname.lastname@example.org.
Would you buy another car from this manufacturer? Yes
Review Date: 3rd March, 2004
4th Mar 2004, 07:06
Switching to a larger wheel size will not necessarily solve your tire squeal problems. It will also cause problems with your speedometer reading, engine computer and possibly your ABS.
Try inflating your tires a pound or two over the recommended pressure, or try different tires. A 205/60-15 would have the same overall diameter, but a lower profile.
You should have been able to figure this stuff out yourself anyway, being the The Professor and all :0.
4th Mar 2004, 14:45
The previous comment is incorrect. You have to go up in size as you go down in sidewall aspect ratio, so if you want to switch to a 60 series tire, you would have to go to a 235/60-15 (if that size exists) to keep the same overall diameter as your 215/70-15.
What does the reference to being the Professor mean?
9th Sep 2005, 14:39
When I replaced my tires, I kept the same 15 inch turbine wheels, but changed the tire size to 225/70-15 instead of the 215/75-15. I also replaced the shocks with firmer ones. The cars handles awesome now considering it's size and weight. And, the wider profile tires make the car look beefier.
20th May 2013, 15:25
How can a tire have the same diameter, but result in a lower profile? (The best it can do is give him a wider footprint.)
To the OP: go with 15" rims and some nice (215-to-235)/75R15 rears; they're a splendid compromise between better fuel economy without sacrificing the amount of air the tire will hold (as thin tires on fat rims do), preserving ride comfort. Note that your mph needle will register about 3-5mph under what you're actually doing (so, if you're speeding, just make sure you're going a bit slower than the rice boxes passing you)...