I have a 2009 Jeep Commander. Tyre size is 245/65/17 (Goodyear Wrangler) I want to put 265/65/17 BF Goodrich tyres on the vehicle. Can I do this and will it affect the vehicle badly in any way?

You can, unless it is 4 wheel drive. if it is 4 wheel drive, it will be hard in your transfer case having a different size in the mix. if not, or if you are changing all 4 tires, your seedometer will just read a bit faster

I'm assuming this is about a rim size for a tyre? The tyre pressure will depend on a number of different things. The tyre size that is fitted, the vehicle it is fitted to, the weight it regularly carries and the average speeds the tyre has to cope with.
Most modern cars and trucks have a plate somewhere on the car giving the tyre size and recommended pressures for light load and fully loaded. It is often on a hidden panel.
Starting with the driver's door, open each door in turn and look at the area normally hidden by the door when it is closed. Also check inside the fuel filler cover.
There are plenty of online sites where you can look the pressures up if you have the vehicle and the tyre size.

talk with a tyre shop as they have the regulations as to tyre sizes that can be fitted
While you can put wide tyres on the vehicle you are limited by law as to the diameter of the tyre that can be fitted as the vehicle has been certified to run a certain diameter tyre and if you breach that certificate then the vehicle will be un-roadworthy, have an incorrect speedo reading and will negate any insurance in an accident

32 34 is good. higher or lower the tires can wear uneven. depends if you haul heavy loads also

tire pressure is a function of car weight and tire type.
since you didnt post car year, we cant guess that, can we.
for stock tires, in the USA< open door, see tire pressures clearly stated.
for non stock tires, that sticker is USELESS, (not stated)
so in that case you get to play car engineer.
using the offical loading charts on the tire.
My jeep , has this. and i Did that.
if you get the pressure wrong the tire treads cup or crown.
causing LOST TRACTION.
it's a balance this.

short answer, ask Goodrich. or get the data sheet on YOUR tire.
and read it.
it's there,

Consider the Falken Ziex ZE-512 at $82.

If you post your present tyre size (on the tyre wall), then we can offer you a suitable larger replacement diameter size.
The simple answer to your question is yes, you can increase the size of your rims, and lower the profile of your tyre to compensate.

The other thing I'd mention as most people who don't know much about tyres don't consider this, is that when you reduce the height (wall) of a tyre by increasing the rim size, then you change two primary characteristics of the tyre's performance.


1: Tyre wall stiffness. Simply put, the shorter the tyre wall, the stiffer the tyre is when cornering. This can be a positive thing and can reduce the amount of body roll, whilst increasing the tyre's contact with the road.
2: Suspension. The tyre wall offers suspension to the vehicle. Yes, it's not just your springs and shocks which absorb the bumps from the road. By reducing the tyre wall height, you will effectively reduce the suspension capability of the tyre and it will become less forgiving on road surfaces.
It's because of these two reasons above that manufacturers try different combinations to deliver the best overall satisfaction rating to the type of customer who is going to drive that type of vehicle.
It is therefore typical that to many people, changing the rim and tyre size will not always have a positive effect.
In fact most customers who request rim size upgrades, according to my own experience are only interested in the appearance of the wheel, but are often disappointed with the results in performance.
This is why I always find it prudent to mention these points to anyone considering a rim size increase.

Rim size increases, because resulting in less tyre suspension actually increases shocks to the chassis components, and will also tend to reduce the life of these components.


So just be aware of what you face, when making this decision.

{: ) Check for excessive wear on any of the tires on the vehicle and then verify that all the tires are the same size, brand, and same model. It is also important to check and make sure the tire pressure is properly adjusted per the sticker on the door. The following examples listed below could cause this condition:
1. 2 tires on the vehicle are Goodyear P245/75R16 and the other 2 tires are Firestone P245/75R16
2. 2 Tires on the vehicle are brand new and the other two tires have excessive wear.
3. 2 Tires on the vehicle are Goodyear Wrangler SRA 265/70R17 and 2 tires are Goodyear Wrangler HP 265/70R17 (Same brand/different models)
4. Aftermarket Wheels and Tires (NON-OEM 20 inch wheels and tires)
5. Tire pressure is not properly adjusted.

Hi,
Thanks for using FixYa!

Please use 36psi for both front tires and 35psi for both rear tires. This is the optimum tire pressure for your jeep. Nice jeep by the way :)

Have a great day.
- HotRatchet

Should be 235/60/15 You can Actually get the BF Goodrich All Terrain T/A to fit on this Jeep with no Prob. LOTS More Meat and Better Handling and 4x4 Actions