Okay, I can't help it, I've got to be a smart a$$, nit-noid. Those aren't stock tires on that Commander.I want to replace the stock tires... Daily-driver... Beefier profile? Lettering? What have others done? Photos would be helpful. Thanks!
A good option for slightly more aggressive daily driver tires are the Goodyear Wrangler Silent Armors. I had them before on a different Commander and they fit the bill. They looked more aggressive and handled well in snow and rain. I used to drive 90 miles a day during the week and I was very happy with them. Unfortunately I didn't hold on the Commander long enough due to the amount of driving I was doing so I didn't get to experience how they wear down, but I also haven't heard anything bad in that regard.
Like BBCBIRD mentioned, there's plenty of pics and threads in the forum regarding tires so have a look but also do some research into the Silent Armors.
You won't find a taller tire that will fit without a lift and possibly some trimming. 245/75R17 is very close to rubbing on a stock setup, but I found that at least with my particular tires, I had zero rubbing, even with some off road and decent compression strokes. Of course, once I installed my lift/spacers, I rubbed on full lock until I worked on the fender liners some. See my thread below of the install pictures on mine otherwise stock.
Okay, I can't help it, I've got to be a smart a$$, nit-noid. Those aren't stock tires on that Commander.
The stock tires are Goodyear Fortera's, with black lettering (not white) which is a great all around tire for a stock Jeep that lasts longer than any other OEM tire I have seen.
You mean stock tire size.
Keep in mind, different overall diameter tires will turn at different rpm per speed. This virtually changes your gear ratio's. Bigger diameter tires will result in less torque to wheels. Within an inch or so of overall diameter, it won't be very noticeable, but the taller the tire, the more sluggish the vehicle will be off the line. Also, rotational inertia is much greater than linear, so bigger tires will also be more massive, greater diameter will increase the rotational inertia geometrically, braking performance will suffer as well. The Commander has big brakes, it should be able to handle bigger tires with reason.
And finally, keep in mind the Commander has ESP/BAS/Roll Mitigation/Traction Control, etc. Tire diameter will effect these systems and the computer will read different rpm per speed than it expects, this can cause all sorts of unintended reactions from these systems. The electronics can be reprogrammed with the tire diameter to get these systems to react properly, so make sure you do it, if you switch tire sizes and have a different overall tire diameter.
It's a dealer thing, its NOT complicated, but the dealer will charge you an arm and leg.Say what you really think! :icon_razz:
Re-programming a dealer thing? Complicated?
Very Cool, thanks for the info!
As Mongo mentioned, you can get a Superchips Flashpaq, which will allow you to change the tire size in the computer to correct for these things. As I recall, I paid around $275 for mine. The nice thing about the flashpaq is it will also read codes on the Jeep and other OBDII cars, you can change shift points, adjust for different octane fuel, adjust speed limiters and so on. It also comes with a few higher performance tunes pre loaded that you can try out for a little extra pep in the Jeeps step.Say what you really think! :icon_razz:
Re-programming a dealer thing? Complicated?
Does the Flashpaq only read OBDII codes OR all the manufacturer extended codes?....The nice thing about the flashpaq is it will also read codes on the Jeep and other OBDII cars,....
As Mongo mentioned, you can get a Superchips Flashpaq, which will allow you to change the tire size in the computer to correct for these things. As I recall, I paid around $275 for mine. The nice thing about the flashpaq is it will also read codes on the Jeep and other OBDII cars, you can change shift points, adjust for different octane fuel, adjust speed limiters and so on. It also comes with a few higher performance tunes pre loaded that you can try out for a little extra pep in the Jeeps step.
As for performance loss, I looked for a P-metric tire to minimize weight gain along with my other points of importance (road noise, wet/dry grip, white lettering, and appearance). I didn't notice any significant difference in off-the-line performance (I have always felt it's kind of a dog off the line, even with the hemi). Any performance loss at any other speed (that I didn't notice anyway) was more than offset by the 87 octane performance tune from my flashpaq. I've still yet to try the premium tune, but have heard good things.
Does the Flashpaq only read OBDII codes OR all the manufacturer extended codes?
My impression it was only the OBDII codes and perhaps a few of the extended manufacturer codes.
Keep in mind, only the OBDII codes are what are easily read out on most cars. It was mandated by the Gov, and thus has to be easily accessible and standard among all the makes/models, it is only the emission control codes and the engine codes that effect emissions.
Since 1996, when it was mandated, manufacturer's have put a dozen computers all over the car, that also all have their own codes to diagnose problems. BUT, since they were NOT mandated, the manufacturer does NOT make those codes easily accessible, only some very expensive tools can read those codes. I do NOT think that the Flashpaq can read all the other codes.
If you don't know, the next time you hook up your flashpaq, see if you can read trouble codes for the TPMS, ABS or the Door Module or the radio, etc... Tools that can read all those codes, usually have the option to just scan one subsystem for codes.
I'm thinking the flashpaq can read some or most of the codes for a few subsystems that they reverse engineered it to work with, like ABS or the Transmission. But NOT everything, like you can't get codes for Entertainment systems, body modules or TPMS, etc.