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Bigger tires in the back (rear wheels) .. side effects?

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cyberpine

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Discussion starter · #1 · (Edited)
Can I expect any negative side effects from having a bigger (taller and fatter) tire in the back than in the front? What about as much as 1.5 inches taller?

Will this impact on differential or ABS in any way? Something tells me that beyond the stance/look and MPGs there won't be a serious impact.

I'm doing this because I like the look of SUVs with the rear a little fatter and upright.

Any thoughts? Thanks.
 
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#2 ·
im not a pro, but i dont think there would be any negative effects because of wider rear tires. many cars and suvs have this. only problem would be for doing tire rotations. and instead of switching around all 4 wheels, you would just swap left to right and right to left in the rear and front.

it would look cool and be expensive lol. i wouldnt mind doing this either when i get some nice rims.

BUT THIS IS ONLY FOR 4x2 Vehicles.

for 4x4 vehicles. it would be a huge problem because the difference in the amount of tire revolutions would be dangerous to the tranny and transfer case.
my neighbors 4x4 gmc sierra dug into his ashphalt driveway for some reason because it was hot out and ashphalt was burning hot. the tires dug in and ruined it. he had different sized tires in the front vs rear.

most vehicles that have staggered wheels(wider rear tires) are usually rear wheel drive vehicles, such as the srt 8 cherokee.

sorry for the spelling mistakes.
 
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#3 ·
Yea, the change in front to rear differential gearing would break something or lock up the drive train. You would need to change the rear differential gear to match the tire combo. You can get away with tiny differences (.1, .2 inches), but 1.5" would definitely mess it up.
 
#5 ·
Todde702 is correct. You must never have different size wheels/tires on a 4x4. In tight 4x4 circles, they even say to check your tire pressure more often so it is always the same.

On the Patriot, you may get away with it better that with an old mechanical 4x4 system. The computer would just think the front wheels were constantly on a slick surface and spinning slightly faster than the larger rear wheels. I wouldn't suggest it though. It is bound to wear something out.
 
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Discussion starter · #8 ·
Gaze said:
throw some spacers in the rear springs. That should give you the rake you are looking for! :p
Click to expand...
Actually considering it. I could go for a 1.5 lift just in the rear. But If do that will that throw off my front end alignment? handling?

Can anybody recommend good rear spacers for the Pat? Easy to install? How much will that stiffen the ride?


On ABS, does the 2.0 have ABS in the back?

Thanks.
 
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#9 ·
All Patriots have 4 wheel ABS with traction control and stability control. As I said, you cannot change the relative tire size for anything less than all 4 tires.

If you want a fatter tire look, do it be increasing the tire width, but keeping the sidewall height the same. That means lowering the aspect ratio while increasing the width. Something like 255/55R16 may work on your current rims. Does your current setup rub at full steering lock?
 
#10 ·
Discussion starter · #11 · (Edited)
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#13 ·
Can you feel the inside of the tire, between the tire and the shock for example? Also, when the wheel is turned all the way in one direction, between the tire and plastic wheel well on both sides? Those are areas that rub due to width/offset, not height.
 
Discussion starter · #14 ·
There is all sorts of room back there.. there are no issues with these tires or rims. see the link above of pics behind the tire.. I see a full 1.5 inches of space in every direction.

I went the 16 inch rim because I wanted a more vintage look, Not really into the pimped-out very low profile look unless the tire looks really wide which you can't do as you go 17+.

I have a theory that i can safely fit 265/60/16 (28.5 x 10.5) but nobody has ever confirmed. I'm ready to gamble $150 just order one for a fit test and then have to deal with a return policy that has me losing a min of $50 in shiping costs both ways.

Its such a rare tire, down here in South Florida nobody has it.
 
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#15 ·
Sorry, I didn't look at the more pics link. Based on those pics with your rims, i think you could go up to 275 or 285 wide without rubbing. I just don't see any in a size that will work for you.

What are your objectives in changing your tires, just looks? Just to be clear, there will be no way to change the rake of the vehicle (raised rear end). So, any change in overall tire diameter will need to be all 4. You can change a pair like the rear only by keeping the overall diameter the same, so 255/55R16 on one axle would be fine with your current tires on the other.

Honestly, I would not go for much larger than stock tire size (diameter), especially for your 2.0L. Besides losing torque be using larger tires, the tires weigh a lot more which also reduced torque available. It all comes back to worse performance for accel, braking, and handling. If you are not taking advantage of the increased height for say off-roading, then skip it. Much of the tough/off-road look come by chagning the tire type. Going from the passenger car tire you have now to an aggressive looking AT like the BFG AT KO, or Toyo AT would do it. I still don't see many tires available for you, though.
 
Discussion starter · #16 · (Edited)
APT said:
Based on those pics with your rims, i think you could go up to 275 or 285 wide without rubbing. I just don't see any in a size that will work for you.
.
Click to expand...
I think so too - at least I was hoping so. And I really wish I knew that before bought the rims and tires... but that's okay cause Im pretty sure I can get back 60 to 70% of what I paid for them. And I'll cut my losses in the name of science :D

Here's my thinking.. I'd like to go with a wider/fater street look and what I have is almost there. heres the combo I think will do a

An 8 inch rim with +12mm offset and a tire of size 28 x 11. Problem is that combo is not available in 16.

I can only wonder if a 17x8 rim with close to 0 offset would work with some 275/50/17 tires. problem with 17 is to get wide you have to step down to 50 and the offset needs to be less, but not so much that the outside lip of the well is an issue.

Anybody know of any 17x8 rims with close to 0 offset?

Anybody running anything like 275/50/17 or is that just crazy? I know that 275/50/17 is simply to wide for the stock rims (7 inch) and also the stock offset which is really too far in given that it's a 7 inch rim.

Thanks.
 
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Discussion starter · #18 · (Edited)
APT said:
This is the best I could find. Not as wide as I think you wanted, but it is the type of tire I think you want.
Click to expand...
lol. thanks . I've been looking at those all day. In fact I got off the phone with a local shop i found on ebay who has those tires (so no shipping costs!). I think they look sweet and most likely my best bet for my rims. I feel the 16s do very much limit me though as I'd like to get to 28 x 11 somehow.

I'm flirting with a 17x8 zero offset experiment. I created another post to see If I can find somebody to challenge the idea of 11 inch wide, low profile, zero offset, 17" tire on the Pat... I just can't see why it would not work, but it would be a $1200 gamble.

Thanks.
 
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#19 · (Edited)
Cyber, for that kind of cash just know this, you will get more feedback from your front-end. I had 5mm wheel spacers all-around after going with 235/65/17s. Even with just the 235s the front spacers create a geometry wobble & float, though minimal, it bothered me, so off went the front spacers.
I do like folks that experiment though. We will need a profile shot of this when you pull the trigger.
I like that wheelset on the black. How do you like the Kooks?
 
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Discussion starter · #20 ·
snokat said:
Cyber, for that kind of cash just know this, you will get more feedback from your front-end. I had 5mm wheel spacers all-around after going with 235/65/17s. Even with just the 235s the front spacers create a geometry wobble & float, though minimal, it bothered me, so off went the front spacers.
I do like folks that experiment though. We will need a profile shot of this when you pull the trigger.
I like that wheelset on the black. How do you like the Kooks?
Click to expand...
The Hankook handle well, they are a lot quieter than the 255/65/16 definity dakotas that would rub on hard breaks.

I'm thinking I'm gonna stay with the black 16" rims - they do look great and completely change the look of the Pat. My next tire will likely be a 255/55/16 General UHP, but I'd like to physically see them. The tread pattern looks sweet.

Image
 
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todde702
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