Wa Gwan

Hello everyone! I just installed a set of 20" TSW's on my 2012 Acura TL 6 speed manual. I have 245/35/20" in the front and 275/35/20" in the rear. Is this safe as far as the all wheel drive set up goes? The car rides like the stock 18" wheels I still have. I'll try and post pics up!

Mr Marco

Not this again...

OP, search first. There are plenty of other threads in AZ already about this subject.

potmilkz

you have a sh-awd, you should run the same width tires for front and back.. the staggered tires will throw off your awd

HeartTLs

iTrader: (5)

He must maintain the same rolling diameter and he'll be fine.

jspagna1

What's the difference if he had the OEM wheels & tires with different size wheels spacers?

njsimons

You need to look what at brand tires you have then go to their website and look at the overall diameter of each tire size if they are pretty close you are fine.

Edward'TLS

275 rear and 245 front.

It has too much traction in the rear, and will transform the front-heavy FWD-chassis TL to exhibit even more understeering characteristics.

NorCalJay

According to www.1010tires.com/TireSizeCalculator.asp the diameter of your tires are off by 3% from "each other" which is probably at or beyond the recommended the limit for AWD. Ask Acura.

You could have went with a smaller 30 series instead of 35 for the 275 rear at a 0.5% diameter difference from each other.

There might be others but FYAH TL is also running AWD staggered & only off 0.5%:
"Front 20x9.5 R disk 235 35 Hankook tires
Rear 20x10.5 A disk 245 35 Hankook tires"

I want to go to a 245/40 275/35 r19 setup (0.3%) if I can find the right wheels...

B.G.

Pics! go with a 275/30/20 and youll be fine.. 75/35 is out of range as other posters have mentioned..

Wa Gwan

I'm sorry guys for the wrong info but I do have 275/30/20" in the rear!

aspecallday

i dont know how you guys are doin 275 in the rear when i m doing 245 and it was rubbing like crazy.I had to take them off and im rolling fenders soon.Maybe its an offset thing that im not aware of.sorry rookie when it comes to offset's

Edward'TLS

^^^^^ It all depends on the offset of the wheels.

If the wheel offset is positive enough, 275 will fit without a hitch.

eazy

iTrader: (8)

What offset are you on? No way a 245 will rub unless your wheels have an aggressive offset. I run 245 all around and dropped on springs no rub. 41 offset

Wa Gwan

My 275's rub excessively in the rear but I love the stance and the wide look! But I'm rockin' my stock 18's for now!

Edward'TLS

^^^^^ Are you gonna do anything for the rubbing problem ?

vivmike

I have 20x10 275/30/20 in the rear...and definitely had to roll the fenders.

Look bad ass.

jusrushem

so shawd tl's cannot do staggered?

FYAH TL

^ You can run staggered on the sh-awd. Several AZ members including myself have done it for a long time without any issues. They are people that say running staggered will mess up this and that but they have never tried it. i have yet to hear about a person that actually ran staggered on their 4G sh-awd and it mess up their car sh-awd system. From what i've experienced when running staggered the tires rolling diameter does not have to be the same just make sure to keep the tires rolling diameter as close as possible...

Running staggered on awd is not recommended. Hell, putting 20inch rims, aftermarket exhaust & j-pipe, staggered on the sh-awd and most the mods we do is not recommended. Do people do it? Yes, and their car rides fine. i've talk with several acura techs on many occasions and they all agree that there's tolerance in the sh-awd system...so if you like staggered setup go for it. As mentioned before keep the tires rolling diameter as close as possble and the car will be fine.

jusrushem

what would be a good set up like you folks?

FYAH TL

^ A good setup can be subjective...its all personal preference.
Here are some examples using a 20" staggered setup.
You can do a 20x9 or 20x9.5 in the front. With tire size 245 35 20
and then run a 20x10 or 20x10.5 in the rear with tire size 275 30 20....
and if you don't want that wide of a tire in the rear
You can do a 20x9 or 20x9.5 in the front. With tire size 235 35 20 or 245 35 20
and then run a 20x10 or 20x10.5 in the rear with tires size 245 35 20 or 255 35 20.
and If you want to have the same size tires all around you can do like a 20x9 front with 20x9.5 rear with 245 35 20 tires on all 4 corners.

Those examples are just a few they are so many ways to do staggered its all depends on the individual and what look you are going for. The 4G Photo Gallery section has various AZ member cars with lots of photos of staggered setup. You'll have to do some searching to see which setup you prefer.

Edward'TLS

Our front heavy, FWD-chassis, FWD-based-AWD TL is factory tuned to exhibit mild understeer.

Putting wider tires at the rear than the front will further worsen the understeering tendency.

Why not do it the other way around ? Instead, putting the wider tires at the front rather than the rear. This will reduce the amount of understeer to towards more neutral handling. If the front tires are wider enough vs. the rears, the car can even exhibit mild oversteering tendency.

FYAH TL

^ Edward'TLS have you run staggered wheels on SH-AWD and talking from actual experience? or are you looking at the way the sh-awd system works and using your technical expertise?

What i've noticed when running wider tires in the rear on my car and from experience the understeer stuff you are talking about was not even noticeable. Am also lowered on TEIN SS coilovers with the EDFC so i can adjust the dampening to make my front and rear harder or softer as i see fit...Also I know others that are running staggered and non of them complain about understeer. Maybe if i was into off-road racing where every little counts then unsteer might be an issue. But for daily driving on staggered unsteer is not even noticeable.

Edward'TLS

Now I fully understand. You have adjustable shocks.

Adjustable shocks can do wonder to custom tuning a car's handling ability.

By continue to increase the damping stiffness for the rear shocks vs. the front shocks, one can transform even a heavy understeering car to become a heavy oversteering one.

But how about those who don't have adjustable shocks, they won't have the luxury to dial back the increased understeering tendency resulting from using wider rear tires.

FYAH TL

For those that don't have adjustable shocks. They can make adjustments with the tire pressures between the front and rear. For example to decrease understeer have the front tires pressure higher than the rears .....and to decrease oversteer have the fronts air tire pressure lower than the rears...but having the adjustable shocks and being able to adjust the dampening does make a world of difference in fine tuning the handling.

Treblig

Will this method also work for SH-AWD cars as well as FWD cars?

FYAH TL

^ It work on all types FWD, RWD & AWD.

Edward'TLS

There are a couple of ways to reduce the tendency to understeer.

(1) crank up the stiffness of the rear adjustable shocks.
(2) put on a stiffer rear sway bar.
(3) increase the tire pressure for the front tires.
(4) relocate heavy stuffs (especially the battery) from the front to the rear of the car.

cadillactien

Ok, I've read all the posts, but still not convinced which set up is right for me. I'm settled on doing staggered 20's and lowering. I want a really flush look, I plan on rolling the fenders, but still worried about rubbing BS. Looking at front 245X35 20's, and rear 275X30 20's rear, I know rolling diameter needs to be as close as possible on a 4th gen SH-AWD.
Looking at Eibach springs?
Wheels are 9.5 front, 10.5 rear, looking at a 55mm offset?
Maybe just do 10.5 all around on 245X35 tires? The big question is what offset should I get to push the limits but stay within a daily driver clearance?
I need real input, exact fits done, with pics to show if you would.

potmilkz

your fitment will clear with those offsets.

nexson fitted a 10.5 rear with +42 and a 275 series tire with a fender roll you should be fine with +55 offset..

https://acurazine.com/forums/showpos...&postcount=289

although i would go with a lower offset..like around 40 or 45.. but its your car, your call.

cadillactien

Ok Thanks man, but what is the exact fit you did for your TL? Front, Rear wheel sizes, off sets, tire sizes?

potmilkz

20x9.5 all around

fronts 235/30/20 rears 255/30/20

+12 all around

front fenders rolled.

rear fenders shaved.

Gaza TL

Yow Fyah Yule. The TL sick. But a few Questions. I am planning on doing 20X9.5 F and 20X10.5 R with 245X35F, 255X35 R. You think that would work on theAWD and what offset?? Also did you install theTein yourself? Want to know how you get the back dash down.

FYAH TL

Yeah that can work. As far as offsets. it depends on alot of factors. is your fenders rolled, shaved etc. how much negative camber you plan on having? The amount lowering you plan on doing etc.? Each car setup is different. There's ways to measure to put the wheels exactly where you desire.
Me and a good friend with suspension experience did the suspension. Removing the back seats will give you access to the rear.

Gaza TL

Just got the TL SH-AWD two weeks ago . but planing on rolling the fenders and have it tucked right at the tire height. after seeing yours i will go 9in front and 10 R. I will run a negative camber but just moderate. 20X9F +42, 20X10R. +38.
should i run a lower offset in front or rear??

farmdog

So....I don't completely understand the whole offset thing.

Can I run this set-up?

19x8 19x9.5 5x120 ET20



With a 245 up front and a 255 or 265 in the rear?


I'm a tire and wheel no0b for sure so school me..

Mr Marco

After fighting all of you with this ridiculous staggered set-up that you want to run, it looks like you get the last laugh.
When I went to the tire store for new rubber last week the guy asked me (without seeing the car) if I was running a staggered set-up on my TL.