Tire guys/mechanics

[ketchenany]

I have 2016 Jeep Cherockee 4x4 with Firestone 225/65/R17 tires.

 

I also have new (12,000 km) Mischelin X-ice 215/60R17 that I had on my Compass which has been sold. The hight difference is 1 inch.

 

I'm getting different stories about changing size, affecting computer setting /readings. . . I know for a fact that it will affect my speed reading, which to me makes no difference at all.

 

The compass rims don't match the 2016 so I'm in for 250.00 for new winter rims.

 

Is it worth it to put these tires on without causing problems or sell them and go for the right size?

 

thanks in advance.

Edited November 12, 2016 by ketchenany

[huzzsaba]

I think 265 to 215 is a big difference for a vehicle the size of a jeep cherokee. My opinion would be to sell the compass rims/tire combo and buy a proper set for the cherokee. You will be spending money taking the tires off the rims and mounting on new rims. Might as well put that money towards something that will fit, perform and look better.

Edited November 12, 2016 by huzzsaba

[cheaptackle]

That height difference is enough to throw off the abs, odometer and probably (I say this with no authority at all) would cause the computers (fuel management etc) to go batty or on strike with the wheels turning faster than they were calibrated for. I didn't save the link but I googled tire sizes for my 2005 base caravan and got a lot of information from a number of sources about what can and can't be used on my vehicle. That and a couple of discussions with my mechanic helped me to make my choices. With your vehicle being a 2016 I'd really be concerned about voiding the warranty with that much of a departure from the tire size it came with. Oh yeah - unless it's not a real concern your gas mileage would drop noticeably as well (might even nosedive!)

 

Michael

[misfish]

I have 2016 Jeep Cherockee 4x4 with Firestone 225/65/R17 tires.

 

I also have new (12,000 km) Mischelin X-ice 215/60R17 that I had on my Compass which has been sold. The hight difference is 1 inch.

 

I'm getting different stories about changing size, affecting computer setting /readings. . . I know for a fact that it will affect my speed reading, which to me makes no difference at all.

 

The compass rims don't match the 2016 so I'm in for 250.00 for new winter rims.

 

Is it worth it to put these tires on without causing problems or sell them and go for the right size?

 

thanks in advance.

 

Send John a PM bud.

[ketchenany]

Sorry wrong figures on the 2016 tires.

 

225/65R17

[Dutch01]

 

Send John a PM bud.

This. Get professional advice, a discount if you have to buy something, and you're supporting an OFC member. I call that win-win.

 

Except it's probably faster to call him. Check the member business directory post for his number.

[Joeytier]

I run 33" summers, and 30" winters. Never had any issues. My front end is aligned for the 33's so I may be improperly wearing my winters, but the difference between those two sizes is basically negligible.

[misfish]

This. Get professional advice, a discount if you have to buy something, and you're supporting an OFC member. I call that win-win.

 

Except it's probably faster to call him. Check the member business directory post for his number.

 

Yup, and if you need to get rims Albert, he,s not that far of a drive for ya.

[ketchenany]

The delaer

Yup, and if you need to get rims Albert, he,s not that far of a drive for ya.

Yup, and if you need to get rims Albert, he,s not that far of a drive for ya.[/dealer

 

B the dealer believe it or not has rims 20 cheaper than CT!

 

I pm John.

 

 

thanks.

[misfish]

^^^^^^^^^^^^^^^^^ are you into the vino already? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 

 

LOL

[ketchenany]

^^^^^^^^^^^^^^^^^ are you into the vino already? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 

 

LOL

nope! 75 CT 58 at the dealer! Homest. I won't tell you what they charge for an oil change it really hurts still.

 

Vino is not ready yet you'll get some for sure.

Edited November 12, 2016 by ketchenany

[misfish]

nope! 75 CT 58 at the dealer! Homest. I won't tell you what they charge for an oil change it really hurts still.

 

Vino is not ready yet you'll get some for sure.

 

Ya, I did see the price at CTC yesterday. WOW

[G.mech]

Here is a link to a tire size comparison calculator. They recommend staying withing 3% of the original tires size but I know lots of people who have run up to 5% without issues (lots of tire experts say 5% is the limit). Your tires would be 4.76% different.

 

 

http://www.1010tires.com/Tools/Tire-Size-Calculator

[John]

Here is a link to a tire size comparison calculator. They recommend staying withing 3% of the original tires size but I know lots of people who have run up to 5% without issues (lots of tire experts say 5% is the limit). Your tires would be 4.76% different.

 

 

http://www.1010tires.com/Tools/Tire-Size-Calculator

 

What he says ...

 

In my humble opinion 5% is too much on today's overly complex vehicles especially AWD/4WD

[mike rousseau]

I've had 3 different sized tires on my truck and I didn't notice issues

 

If I remember rights these were the 3 different dimensions

 

275/65r18 (stock size)

265/85r18

275/75r18

[Old Ironmaker]

What do these car guys and gals do when they go from 15" or 16" stock wheels on these Tuners and Customs to 20" plus rims and reduce the tire thickness from a 65 CM to a few inches? Maybe a silly question but I really would like to know how a 5 CM decrease in height is a big deal, or is it?

[ecmilley]

You would ideally keep it within 3% of oem diameter go to MiAta.net for tire sizeroed calculator.

[GBW]

What do these car guys and gals do when they go from 15" or 16" stock wheels on these Tuners and Customs to 20" plus rims and reduce the tire thickness from a 65 CM to a few inches? Maybe a silly question but I really would like to know how a 5 CM decrease in height is a big deal, or is it?

When I was younger and needed a new set of summer tires I went from a 15" rim to a 19" on my VW and had to take the sidewall of the tire to a much lower profile so the total was the 3% or less in actual change (stock is knee height then replace with the same total). I was buying new wheels as a second set so I took advantage of a deal I came across. My little golf's cornering got SO much better to with a performance tire too. And even though I was driving the car harder I wasn't burning a lot more fuel.

[Old Ironmaker]

I think got it Geoff. The total diameter from bottom rubber to top of rubber is close due to the thickness of the tire being much less?

 

A 15" wheel and 8" of rubber is the same as a 20" wheel and 3" of rubber.

Edited November 13, 2016 by Old Ironmaker

[DRIFTER_016]

Well considering my buddy just bought a brand new Jeep Wrangler 4dr and the stock tires are P24575R17's and my he got it with 35 12.50R17's from the dealer.

 

Stock 31.5"

Aftermarket (from dealer) 35"

Difference 3.5" and 11.1%

[GBW]

I think got it Geoff. The total diameter from bottom rubber to top of rubber is close due to the thickness of the tire being much less?

 

A 15" wheel and 8" of rubber is the same as a 20" wheel and 3" of rubber.

That's the idea.

 

However as per Dave's buddy, that's a whole new game. Most you would hope would be tested on a dyno to ensure speed is as accurate as possible with that much change. Not a mechanic nor will I ever claim to be...

[Old Ironmaker]

I think the new crop has come through were Dave is. Wow.

[DRIFTER_016]

However as per Dave's buddy, that's a whole new game. Most you would hope would be tested on a dyno to ensure speed is as accurate as possible with that much change. Not a mechanic nor will I ever claim to be...

 

 

Adjusting the speedo for tire size is now a simple setting in the on-board computer with a laptop on most new vehicles.

[GBW]

Adjusting the speedo for tire size is now a simple setting in the on-board computer with a laptop on most new vehicles.

I had hope it would be easy to do now.

[Sinker]

The snows would only be 10mm narrower, (which is better in snow IMO), and 5% of the width lower. I don't see a big deal between them, but I"m not a tire expert. IF it was me I would put them on and be done with it.

 

S.