ketchenany Posted November 12, 2016 Report Share Posted November 12, 2016 (edited) 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 Link to comment Share on other sites More sharing options...
huzzsaba Posted November 12, 2016 Report Share Posted November 12, 2016 (edited) 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 Link to comment Share on other sites More sharing options...
cheaptackle Posted November 12, 2016 Report Share Posted November 12, 2016 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 Link to comment Share on other sites More sharing options...
misfish Posted November 12, 2016 Report Share Posted November 12, 2016 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. Link to comment Share on other sites More sharing options...
ketchenany Posted November 12, 2016 Author Report Share Posted November 12, 2016 Sorry wrong figures on the 2016 tires. 225/65R17 Link to comment Share on other sites More sharing options...
Dutch01 Posted November 12, 2016 Report Share Posted November 12, 2016 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. Link to comment Share on other sites More sharing options...
Joeytier Posted November 12, 2016 Report Share Posted November 12, 2016 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. Link to comment Share on other sites More sharing options...
misfish Posted November 12, 2016 Report Share Posted November 12, 2016 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. Link to comment Share on other sites More sharing options...
ketchenany Posted November 12, 2016 Author Report Share Posted November 12, 2016 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. Link to comment Share on other sites More sharing options...
misfish Posted November 12, 2016 Report Share Posted November 12, 2016 ^^^^^^^^^^^^^^^^^ are you into the vino already? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ LOL Link to comment Share on other sites More sharing options...
ketchenany Posted November 12, 2016 Author Report Share Posted November 12, 2016 (edited) ^^^^^^^^^^^^^^^^^ 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 Link to comment Share on other sites More sharing options...
misfish Posted November 12, 2016 Report Share Posted November 12, 2016 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 Link to comment Share on other sites More sharing options...
G.mech Posted November 12, 2016 Report Share Posted November 12, 2016 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 Link to comment Share on other sites More sharing options...
John Posted November 12, 2016 Report Share Posted November 12, 2016 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 Link to comment Share on other sites More sharing options...
mike rousseau Posted November 13, 2016 Report Share Posted November 13, 2016 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 Link to comment Share on other sites More sharing options...
Old Ironmaker Posted November 13, 2016 Report Share Posted November 13, 2016 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? Link to comment Share on other sites More sharing options...
ecmilley Posted November 13, 2016 Report Share Posted November 13, 2016 You would ideally keep it within 3% of oem diameter go to MiAta.net for tire sizeroed calculator. Link to comment Share on other sites More sharing options...
GBW Posted November 13, 2016 Report Share Posted November 13, 2016 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. Link to comment Share on other sites More sharing options...
Old Ironmaker Posted November 13, 2016 Report Share Posted November 13, 2016 (edited) 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 Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted November 13, 2016 Report Share Posted November 13, 2016 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% Link to comment Share on other sites More sharing options...
GBW Posted November 13, 2016 Report Share Posted November 13, 2016 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... Link to comment Share on other sites More sharing options...
Old Ironmaker Posted November 13, 2016 Report Share Posted November 13, 2016 I think the new crop has come through were Dave is. Wow. Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted November 13, 2016 Report Share Posted November 13, 2016 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. Link to comment Share on other sites More sharing options...
GBW Posted November 13, 2016 Report Share Posted November 13, 2016 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. Link to comment Share on other sites More sharing options...
Sinker Posted November 17, 2016 Report Share Posted November 17, 2016 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. Link to comment Share on other sites More sharing options...
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