Staggering Widths on a AWD 18" wheel?

[Kosh]

Can you stagger the tire widths on the stock wheel with AWD without adverse effects?

Like 245 in the back 225 or 235 in the front ... i guess same 45 or 40 ratio?

Sorry I've never bought a size different from whats stated so unsure of what adverse effects one could expect from doing it...

or maybe i should just do 225's or 235's square all around

Thanks in advance

Know the 19's have staggered setups ... and the tires for that are 225/40r19 and 255/35r19 Which I guess are similar in height but over an inch different in width

 

[MerlintheMad]

Only a half inch of difference, 8" front, 8.5" rear.

 

[Kosh]

Only a half inch of difference, 8" front, 8.5" rear.

I meant in tire width 225 is like 8.8 inches is about 10

Was asking about changing the stock tires and installing different widths

 

[Kamauxx]

As long as the overall heights match I don't see what the problem could be. Unless there is something specific to AWD systems that don't give well with OE sizes.

For instance a 285/30/20 tire would be nearly the same height as 245/35/20. The stock 255/225 setup is a 0.4% front to rear height difference, same as the above 285/245 set up.

 

[Kosh]

The

As long as the overall heights match I don't see what the problem could be. Unless there is something specific to AWD systems that don't give well with OE sizes.

For instance a 285/30/20 tire would be nearly the same height as 245/35/20. The stock 255/225 setup is a 0.4% front to rear height difference, same as the above 285/245 set up.

The AWD system is why I was asking ... if there is some kind of inherent problem doing this since 19 inch cars are about the same as 18" other than the rims right ?

was considering doing Continental DWS Tires or Michelin AS3+ tires on the stock 18" wheels

 

[westcoastGT]

Since this AWD is rear biased , no issues . It can adapt to 50/50 in slippery situations but will run 75/25 in sport or under hard acceleration

 

[Kosh]

K anything wrong with 225 in front 245 in rear or 235 in front and 245 in rear if theyre hopefully within 0.5 inches of each other (Diameter)?

Also any issues with putting a 245 mm tire on an 8" wheel ? know it will lean off an additional 0.85 ish off each side of the rim ... any adverse performance or tire wear issues with doin that?

LIKE I wont kill anything or being doing anything insane if i go for a setup like this right?

 

[Waynerm002]

Based on how the 19”are setup, that should be fine, they are within.5 inch of each other. Use a tire calculator to help with this. I think the 18” wheel should be around 8” in width but don’t own one so can’t say for sure.

 

[Lillian]

Can you stagger the tire widths on the stock wheel with AWD without adverse effects?

Like 245 in the back 225 or 235 in the front ... i guess same 45 or 40 ratio?

Sorry I've never bought a size different from whats stated so unsure of what adverse effects one could expect from doing it...

or maybe i should just do 225's or 235's square all around

Thanks in advance

Know the 19's have staggered setups ... and the tires for that are 225/40r19 and 255/35r19 Which I guess are similar in height but over an inch different in width

Just call tire rack.....
They will give you all the info you would need.
You wont have to do the math...

 

[WildBill]

The staggered 19" setup is only .1" different in diameter, no where near 1/2"
I would never make a change that drastic on an AWD car, Most likely you will be in the shop with a burnt up / tore up center differential which KIA would have every right to decline warranty repair on.

225-45 R18 = 26.0" dia
225/40 R19 Fronts = 26.1"
255/35 R19 Rears = 26.0"

 

[WildBill]

Note, To get the same diameter on 18" rims you need to stagger at 30mm in section width and go down 5% in aspect ratio.
225-45 R18 = 26.0" dia
255-40 R18 = 26.0" dia
-or-
235-40 R18 = 25.4" dia
265-35 R18 = 25.3" dia

But most will say no more than a 245 on an 8" wide wheel which is what KIA OEM 18" wheels are.

 

[Kosh]

So 0.3 inches on diffeeence is too big ... k ?
Assuming a square 235 would be fine tho ... might just go with stock on the as3 + then .. or 235 dws

 

[WildBill]

I personally wouldn't go with .3" difference in Dia. And unless your dealer did the install, anyone's recommendation would still be on you if something went south.

Square 235's would be fine. You'll just have some speedometer error that's all.

235-45 18 = 26.3" dia = 101.36% difference to OEM = 65.9 MPH actual when 65 MPH on the dash
235-40 18 = 25.4" dia = 97.80% difference to OEM = 63.6 MPH actual when 65 MPH on the dash

My plan is to get some 255/35-19 tires and rims when these tires are shot. Same 26.0" tire diameter as OEM.
Then I'll put some snow tires on the 18's

 

[Kosh]

Thanks I assume the ride would be a bit more comfortable at 235-45-18 then 235-40-18

 

[Kosh]

Thanks I assume the ride would be a bit more comfortable at 235-45-18 then 235-40-18

If they’re the same height across all 4 but slightly off in size is it gonna be a big issue ... example 245/45/18 for all 4

Somehow I just did something dumb

Also is the unsprung weight of that gonna be a large issue ?

Stock tires are 24 lbs
Dws is 25 lbs at that size and Michelin 28

Thanks

 

[WildBill]

Thanks I assume the ride would be a bit more comfortable at 235-45-18 then 235-40-18

That is going to depend on the tire model and how stiff the sidewall is. But in general, yes, more compliant and slightly more give on the turn-in.

If they’re the same height across all 4 but slightly off in size is it gonna be a big issue ... example 245/45/18 for all 4

Somehow I just did something dumb

Also is the unsprung weight of that gonna be a large issue ?

Stock tires are 24 lbs
Dws is 25 lbs at that size and Michelin 28

Thanks

I can't imagine the 1 to 4# will make that much difference to the suspension. I've never really compared the weights of tires when I changed them out. I just looked for the correct size and then compared performance, price, and longevity criteria when choosing.

FYI, 245-45 18 = 26.7" dia = 102.73% difference to OEM = 66.8 MPH actual when 65 MPH on the dash

I've seen where others are running 26.5" dia. 275/30-20 and 235/35-20 tires. So the diameter should be OK, Hopefully the offset of the factory rims will provide sufficient clearance. It is 1cm per side of the wheel, so I'd expect it would be OK but I have not gotten under the car to measure the clearance between the tire and suspension components.

Anyone else have any input?

 

[Kosh]

That is going to depend on the tire model and how stiff the sidewall is. But in general, yes, more compliant and slightly more give on the turn-in.


I can't imagine the 1 to 4# will make that much difference to the suspension. I've never really compared the weights of tires when I changed them out. I just looked for the correct size and then compared performance, price, and longevity criteria when choosing.

FYI, 245-45 18 = 26.7" dia = 102.73% difference to OEM = 66.8 MPH actual when 65 MPH on the dash

I've seen where others are running 26.5" dia. 275/30-20 and 235/35-20 tires. So the diameter should be OK, Hopefully the offset of the factory rims will provide sufficient clearance. It is 1cm per side of the wheel, so I'd expect it would be OK but I have not gotten under the car to measure the clearance between the tire and suspension components.

Anyone else have any input?

Thanks for your help ...

Think I'll try for a 245 - 45 - 18 setup then ... just gotta find a good deal on one of these ... seems a lot of members here have good luck with AS3+'s but havent really seen anyone with DWS tires.

$628 for the DWS 06 vs $772 for the Michelin A/S 3 Plus

Are the Michelins that much better?

And Also weight wise does anyone else have input on the weight difference?

Thanks!

 

[WildBill]

As far as the tire selection goes, on my last car (2010 Subaru Legacy GT) I got 16022 miles out of a set of DWS tires and 25767 out of a set of AS4+ tires. Even though they were more expensive the Michelin tires were 25% less expensive when you look at cost per mile.

These are just my experiences. I have heard that other people say they got better mileage out of the DWS tires than I did and they love them. Maybe I am hard on my tires but I drove the same on all of them. Those DWSs were horrible in my book.

 

[Kamauxx]

As far as the tire selection goes, on my last car (2010 Subaru Legacy GT) I got 16022 miles out of a set of DWS tires and 25767 out of a set of AS4+ tires. Even though they were more expensive the Michelin tires were 25% less expensive when you look at cost per mile.

These are just my experiences. I have heard that other people say they got better mileage out of the DWS tires than I did and they love them. Maybe I am hard on my tires but I drove the same on all of them. Those DWSs were horrible in my book.

The Contis have a 50k mile warranty. With a treadwear rating of 560 it should have at least doubled your 16k miles. You should have complained to them.

ExtremeContact DWS06 - 245/40ZR19 98Y | Continental

 

[WildBill]

I did all of my rotations and tire changes between winters and summers myself. That and I kept lousy records of alignments.
That car would eat up the insides of the tires a bit.

Here is a pic of the DWS when they came off. I had a pic of the AS3+ but must have deleted it. Cords were showing on at least 3 of them but they had a little more tread than the DWS.