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Comments
The point is that one could then rotate the wheels/tires with 255's on all wheels.
The dealer did not recommend as it would put unnecessary stress on the front end and may cause hydroplaning in extreme conditions.......and if 255s in front caused any damage or premature wear the warranty would not cover...
For winter I put 235s all around.....no problem......
I am looking for a set of 2006 2007 SRX 18 inch wheels...
I have the 20 inch wheels that come with 255/50 tires on all 4 wheels. The turning circle is still just under 40 feet, so I don't know what has changed.
I bought a 2004 SRX new. I included the 20" wheel package, boy, what a mistake. 6 months later the chrome was peeling off, so the dealer replaces all four. Now, 3 years later the chrome is peeling off again. Note, they are constantly being cleaned and waxed. I brought my SRX back to the dealer with a clicking noise when I would make a turn. It was discovered that one of the spokes was cracked! Ready for this, I was told that the company who made the wheels is no longer in business!!!!! Any ideas of what I could do with my dealer? Am I stuck buying all new wheels, out-of-pocket????
I bought my '07 july 30, 2007 and took it on the tail of the dragon october 10, 2007 with only 2200 miles on it, and found it after i ran the road at high speeds that i only had 26lbs of air in the tires.
couldn't figure out why it felt more floppy than my '04 did, thought it was the ultraview taking structure out of the car vs. my '04 base with solid roof.
i also think i have an out of round rear wheel. both of my srxs have a vibration at high speeds. steering wheel doesn't shake so that means the issue is in the rear of the car.
The narrower tire width in the front (235MM) does help reduce hydroplaning in the wet and also a similar issue in the snow. This is because a narrower tire with a given downforce (weight) exerts more pounds per square inch on the contact area than the wider 255MM tire. Conversely (and theoretically) the wider P255 tire provides more pavement contact area on dry pavement and hence more grip in the dry. The best extreme comparison is a 100 pound woman standing on your hand with a spiked heal shoe. That spiked heal exerts more pounds per square inch force on your hand than a 200 pound woman wearing a flat soled shoe!
Personally, I find the different sized tires rear versus front, for practical everyday use, ridiculous for the reason others have pointed out. The fronts wear out faster due to the forces of steering, cornering, and weight. And you wind up unable to balance the overall wear of your tires through front to back rotation. I have this problem with my Infinity. You find you are replacing the tires in pairs rather than all at once.
Same sized tires that satisfy your personal wants and needs should drive your decision. And since you are buying this vehicle for more practical purposes and are not likely to go racing or autocrossing, go for the inclement weather traction and the simplicity of 4 same sized tires that can be rotated front to back. For this discussion, the better inclement weather tire would be 4 tires sized P235-60-18 tires all around.
I was told that the conversion to a single sized tire insures the same tire diameter all the way around, which one poster said is important for safety. Agreed. The P235-60-18 front tires are the same diameter as the P255-55-18 rear tires.
Note that as the tire width goes up or down between 235mm and 255mm (change of 20MM), the aspect ratio (essentially the sidewall height, second number) changes to keep the diameters the same. Going from a P235 tire to a wider P255 requires an aspect ratio reduction from the 60 series tire to the 55 series.
Summary: each 20mm change down or up in tire width requires a one size increase or reduction in the aspect ratio to achieve the same tire/wheel diameter. Up 20MM to P255 and down to 55. Down 20MM to P235 and up to 60.
Your tire dealer should be able to verify this, especially with a specific tire......they have the diameter charts by brand and tire down to 1/10 of an inch!
Sorry if what I have written isn't 100% correct, and don't hesitate to point it out if I am wrong. I am just trying to simplify things for those who are less knowledgeable about tire sizes and the safety physics involved.
The first generation 2007-2009 SRX had the factory Sport Package Option: 20" wheels, all with exact matching P255-50-R20 tires on all four corners. Straight from Cadillac/GM. Same rolling diameter.
Second, a zillion people during the winter run either winter tires on their original rims or a dedicated tire//wheel package on first generation SRXs, all exact same size tires on the four corners with the same rolling diameter.
Third, for those with offset tire sizes that came with the car.....the same diameter between the fronts and the backs is achieved by using different aspect ratio tires (the middle number). For those with factory (or aftermarket)18 inch rims : P235-60-18 fronts and P255-55-18 rears. Same rolling diameter.
Find yourself another tire dealer.
Now there is a recall for the exhaust System. Cadillac orderd the part.
Now the SRX will not start. You turn the key and it does not crank at all.
Is this a Starter issue or the anti theft system built in the car. I am so so
angry. I can not even get the Truck to Cadillac because it will not start.
One problem after another. Does anyone have any advice. [email protected]
I am told the starter is under the middle of the Engine and it is a 700.00 JOB
The truck does not even have 90,000 miles on it. I am so sick and tired my wife would not even drive the truck because she is so afraid of something else going wrong. What is going on with American made Truck??????
The Brakes need to be changed every 10,000 miles. I was told it was the way my wife drives.
My wife drives 4 miles a day back and forth to work. I have had Stability issues, which I see is a major problem with these trucks. It is also a very serious saftey issue. I have had a check engine light on due to a faulty exhaust converter problem. Cadillac has issued a recall on the converter issue. I ordered the parts from the Dealer, finally a fix. Well now guess what? The car will not start. It has a brand new battery...............When you turn the key the lights come on, however the car does not crank over. To make things worse. I do not have a Dealer in Staten Island. I wonder why????? I have to go to New Jersey. The Cadillac will not start. I can not even get the Truck to New Jersey. My Wife has gotten herself mentally sick over this truck.
I do not know where to go with my problem. Does anyone have a Class Action Suit against Cadillac??I would lke any information. I was told the Starter issue could be one of 50
issues. The truck needs to be connected to a GM Computer at the Dealership. OK I live in Staten Island how can I get my SRX to New Jersey, if any of you nice people out there have some advice.....................Please help. Thses issues have caused us some much extra stress
in my family that I do not know what to do. How can Cadillac produce such an expensive truck
with some many mechcanical problems. We are at our witts end.
The dealer has been rotating my tires from front to back. Will this cause a problem? My 2006 SRX only has 20,000 miles.
2.
I love in Anchorage Alaska, what type of winter tires should i be usoing for ice and snow?
Is there a safety hazard here??
Has other poeople have a similar QUALITY problem?
The car is Diamond White with all the bells and whistles and terrible looking wheels. Appears to me that a clear plastic stick on, like scotch tape, was used to cover the machined wheels and is falling off. The wheels corrode where the stick on falls off.
Be careful when you buy any of the machined wheels.
Remind me to NEVER, EVER purchase another Cadillac.
Someone on this forum said, "it's not a Formula vehicle" (it's a station wagon with AWD). Correct.
And with the same size tire of all fours, the rolling diameter is the same as it is with the mix of 235/60R18 and 255/55R18. So asinine that any GM / Cadillac shop would tell a loyal customer they're "not honoring the warranty because the customer used the same size tire - all around".
Yep, my last Cadillac.