and your speedo will be wrong

 

So are there any practical benefits or just looks?

 

more surface area, better traction.
but remember better traction at low speeds on dirt/gravel and such,
at higher speeds and wet surface depending on treads, can be more prone to hydroplaning

 

More tire choices. The largest OEM size is 215/65/17 = 28" so going to 225/65/17 = 28.5" isn't much of a difference. The overall diameter variance is 1.83%.

https://www.1010tires.com/Tools/Tire-Size-Calculator/215-65R17/225-65R17

 

Depending on the tire, you can get a better ride quality out of it. More sidewall = more sidewall flex = more comfortable ride over harsh surfaces/road imperfections.

More/different tire choices. It does also look better. Its amazing what even a small tire size increase does for the look of a patriot. (at least in my eyes) the 225/65-17 should be the stock size for a FDII patriot.

 

I just upsized to a 225/65/17 and, aside from looking a lot better, I have noticed a better ride quality. Cracks, potholes, bumps, etc in the road don't feel as rough.

 

for my FDI 4X4 limited patriot the standard tires are 215/60/17

using the very handy tire calculator you suggested going to 225/65/17 ( a size that I see many have used without having lifted the patriot)

Gives a 5% difference (outside the 3% variance limit) almost 1,5 inc higher g clearance

215/60R17
Overall Diameter: 27.16 in 689.80 mm

25/65R17 Imperial Metric
Overall Diameter: 28.52 in 724.30 mm

Diameter Variance: 5.00%

http://www.1010tires.com/Tools/Tire-Size-Calculator/215-60R17/225-65R17

Do u think it is safe??

 

i used to run 245/65-17 tires (lifted with spacers) no reassson they would be un safe. a stock tire size is 215/65-17 which is a 28" tire or .5" smaller than a 225/65-17. which is minimal.

 

If I go to the 225/65/17 (28.52 in)

When changing to the bigger tires Do I have to do any modifications/ tweeks to the suspension, alignment/brakes etc?? Or

Mine is a FDI 4X 4 (with oem 215/60/17 27.16 in)

I guess there in the States the standard even for FD I is 215/65/17

 

No additional modifications needed. Just remember that your speedometer/odometer will be off by 5%. I've been running 225/70/16 which are 28.4" tires for 20K+ miles now with no issues what so ever. Thinking going with 235/70/16 = 29" next time.

 

Since the odometer will be off ( you travel further on each revolution with bigger tires) is it legal? The mileage shown on the odometer will be understated.

 

Typically we can only reprogram for stock tire sizes. Jeeps may be different than other Chrysler product though. They charged you too much too. I would only charge 1/2 hour to reprogram tire size.

 

The dealer can only reprogram to the largest OE size of 215/65/17 which is 28". So if your tires are larger than 28", your speedo will still be off. No point paying $100.

 

The dealer can only reprogram to the largest OE size...

I've read that quite often and the service manager at my local dealer agreed - but I had them change it on mine regardless because mine came stock with 205/60/r16's so a significant difference between the 225/75/r16's I mounted. But when the mechanic came back he said he could set it to most any size available and got it almost right on (my speedo reads 59km/h when travelling at 60), it wasn't a matter of setting the tire size, but the pinion factor, which he could set to any whole number. Perhaps they sent different programming for Canadian Patriots or early in production (mine's an '07) but that's my experience.

 

They just match the closest diameter setting... They had it for an hour and a half. Idk why... Should have took them 15 minutes max... Even with looking up info on a tire calculator. I kept my tire choices under 28". Mine are 27.7" and I think they went with the size lower. I would have forgone it but $120 is worth keeping my warranty.

 

Tires would have no effect on warranty. I install 4" lift kits on brand new rams with 35's all the time. These are unsold trucks on the lot.

 

If you change tire sizes without reprogramming the computer your odometer will be off which will void a power train warranty if they happen to notice.

 

I highly doubt anyone would care enough to even think of voiding the warranty for that. I've never heard of Chrysler asking if a vehicle has larger than OE tires for any warranty concern in the 3+ years I've been wrenching at a dodge dealer.

 

Do the math

Hello paokarathodoros,
Thessaloniki Greece looks like a beautiful city. The closest I ever came to Greece was the Kithira Anchorage offshore. Anyway you got it right when you said “On the down side with wider tires you loose acceleration, AND most importantly it is as if we have LESS TORQUE???? (an area where patriot suffers): (so in sum larger tires alone are negative especially offroading?)”
I will suggest you look at the Outer Diameter closely and keep it as close to the original dimensions as possible. You may decrease the rim to 16” for a softer ride or go wider tire like 225 or 235, but the main consideration is your primary driving environment. I made several calculations and decided that the 225 65R16 Touring Tire is the most suitable choice for my Patriot and my driving environment here in South Florida.
* Torque is what makes the wheel go around and changes to the wheel’s overall diameter will directly affect torque and may also affect the transmission which may affect acceleration and other changes may affect breaking and handling. * Rule of thumb: for every 1” increase in wheel diameter there is a 3.5% loss in torque. * Wheel outside Diameter = Rim Diameter plus twice Section Height. Tire Footprint: The tire section in contact with the road. Wider is good in dry surface, very bad on wet surface due to Hydroplaning and increased drag. * Wider tires will not necessarily yield better traction due to tire tread, road surface, and driving environment. I recommend research and take a look at the numbers. Meanwhile without additional modifications the numbers do not support dramatic changes in rim or tire. My recommendation is to research and do the math.
Hope it helps. Chief

 

I can't comment on how it works in the EU because I do not know.

 

Hi elpayaso, yep thessaloniki is quite nice city... Kithira where u have been is further south... thessaloniki is a port on the north of Greece.

(paok is my football team here in thessaloniki ...... not performing well lately...:doh: and thodoros=theodore my name)

Thanks also for the maths. very helpful

My main driving environment is tarmac, (so the most sensible option would be keep the OEM dimension and go for a 100% flat-asphalt tire) But then, I guess often more for psychological reasons I say i own a jeep (even a light weight one) so u want to have the ability for some offroad....

I have almost concluded to the 225-65/17 Continental cross LX 2 (which are 80 on road-20% offroad) not sure if they sell this brand in US.

The main benefit is that I like the fact that the patriot will be about 1 inch taller 28,5 from 27,5 (with OEM 215-60-17)

The thing that gives me second thoughts is the loss of torque issue. 220 Nm is very low number for a vehicle 1600 kg. So going to approx 213 Nm with ur calculations is even smaller.

That was my main concern when raising this thread. If anyone with taller tires has experienced this reduction in torque. Climbing up hill etc... (Because on highway I think the patriot is ok Horsepower wise especially as the revs go up.

But I am wondering if at low revs when offroad , if anyone has experienced this reduction in torque??




Regarding the speedometer being a lawyer (although Greek- continental law and I have not read the US warranty terms), I dont believe someone is in breach for that. The dealer may only question the number of kilometers u have travelled. So he can only claim that ur warranty has expired a little earlier (if he can calculate and prove the correct number of km). Changing the tires in no way can be interpreted as a modification that harms the engine etc...so as to void the warranty) ....

 

hi!
sorry for asking here,but do you know where exactly is the jeep patriot hellas club meeting tomorrow?
i know it is somewhere near volos,but where?
thanks

 

Iam not sure if there will be a meeting after all, since I didnt see many people intrested, I think it too early, cause still summer weekends everyone is at the beach and not on mud trails...

Theoretically it was planned to meet 10.30 am at volos end of Dimitriados st.
(i dont know where it is but they say u can find it on google)


http://jeeppatriot.forumgreek.com/t106-topic

Maybe can ask them on the facebook group

https://www.facebook.com/groups/113925947629/

 

ευχαριστό πολή¡

 

the 225-65-15 continental LX2 are 27.1 lbs (each tire)

while the OEM 215-60-17 continental premium contact 2. weight 22.9 lbs

So based on ur rule it seems ok..

 

Mine were close to 40lbs. so you should be just fine!

 

when I went to a larger tire I immediately noticed it corned much better! it definitely felt grippier. I know that isn't a word, by it should be

 

True, but the tire size is only .5" over stock, and the weight is only a few more lbs. I was only 2" over stock but almost double the tire weight of stock. I had to throw on some super cheap tires to sell it, and they weighed just under 30lbs, vs the nearly 40lbs my AT tires weighed but were the same size as the AT tires, and the difference in performance was noticeable, just by changing the weight of the tire.

 

another question

Watching fotos of fellow patriot owners who went to taller tire diameter without a lift

There seems (in the fotos at least) to be left a little space between the top end of the tire and the car body (not sure how is called in english).

So is there an issue when suspension is compressed (eg when passing an obstacle) ie there is less space for the springs to contract as the top of the tire touches the body of the car?