I have an 09 TL SHAWD, stock aero kit gunmetal paint. I am doing some research for some new wheels and trying to keep stock suspension.

Will 20x9" +35 sit outside the fender or pretty flush?

Going with 245/35 tire.

Some insight would be very appreciated.

 

wont sit flush, you are not lowered.

will sit inside fender.

would go a size bigger in width.. probably a 255.

dont go 20's if you already drive hard with your car.. 20's make your car have a shitty ride compared to 19's with 40 series tires..

 

I have to disagree on this. I went from the OEM 19's to 20's and felt little to no difference.

 

i guess you dont grasp the concept of big wheels = less side wall = less rubber to absorb bump = rough ride.

not to mention makes acceleration slower and throws off your speedometer..

i run 20's so im just letting you know.

 

In my case, at the beginning I wanted to go 20x9 all around with 245/35 R20 tires and when I did a test fit to see the results, the wheels in front sat almost flush with fender. In the back was completely different story, the wheels were stock inside the fender, but not by much. At that moment I realise that that wasn't the look I wanted. So I went wider in the back 20x10.5 for a look more staggered. Could not be happier.
Hope this info helps you :-)

 

lookwise, it is better to run staggered.. in a performance aspect for a awd.. it is better to run squared.

so if you are a fwd.. go staggered if you want.. but if you are a awd.. as long as you can keep the rotation the same for the front. you should be fine

 

Actually, I fully grasp the concept of less sidewall = rougher ride. You must not grasp the english language because no where in your original post did you say that. You just said going to 20's will give you a shitty ride compared to the 19's, which is what I disagreed with. I was speaking from experience since I made that change (as opposed to your going from 18's to 20's and having different specs on your tires than the OP's referring to).

Going from 19's with a 40 series to 20's with a 35 series is a minimal change in sidewall (assuming both are 245's) and thus a minimal change in ride quality. We're talking 12mm less sidewall!

Also, wheel size has nothing to do with making acceleration slower and throwing off your speedometer. If you keep the rolling diameter and weight of the wheel/tire the same as OEM specs it has no affect on speed or acceleration.

 

well what i said is true, and it is backed up by science.. im not sure how else i can convince you that smaller sidewall = bumpier ride(shitty ride). the proof is in the pudding.. only thing you have to say is from personal experience.. which in fact is an opinion, everyone has different opinions on things.. i hate plastdip, but some people like them.. see where i am going with this?


lets be realistic here.. if you are not spending 3.5k to 5k and up.. you aint getting a 20 inch wheel that would be lighter than your stock wheels.. Plus, the OP is leaning towards niche wheels.. m142 to be exact which are cast.. and in 20's they will be heavier than the stock 18 inch wheels.

OP is running on stock 18's FYI.. and going to 20's.. exactly what i did.. so if you want to get "technical" then you should not be commenting as you do not have personal experience going from 18 to 20. BTW, i am on 35 series tire on my 20's.

a 245/45/18 overall diamater is 25.7 inches (652 mm)
a 245/35/20 has an overall diameter of 26.8 inches (680 mm)

if going at 60mph actual speed is 62.6 mph which is 4.3% faster with 20 inch wheels.

so yes, it will throw off your speedometer, and judging from what wheels and tire size OP is using, it will be heavier and acceleration will decrease.

 

Potz, where did you get those numbers from?

I have 245/45/18 as: 26.7in and 245/35/20 as: 26.8in (which is correct but not on the 18s)

With that change it is only: 0.3% slower on 20s and reading 60.2mph when the actual reading is 60mph. I used 2 different sites.

 

Quote:

Originally Posted by potmilkz

well what i said is true, and it is backed up by science.. im not sure how else i can convince you that smaller sidewall = bumpier ride(shitty ride). the proof is in the pudding.. only thing you have to say is from personal experience.. which in fact is an opinion, everyone has different opinions on things.. i hate plastdip, but some people like them.. see where i am going with this?

I don’t know how I can make it any clearer that I’m not debating the fact a smaller sidewall will lead to a bumpier ride. I’m just saying the difference between 35 and 40 series tires is negligible (at least in 245 width) in regards to sidewall height and thus ride quality.

Quote:

Originally Posted by potmilkz

lets be realistic here.. if you are not spending 3.5k to 5k and up.. you aint getting a 20 inch wheel that would be lighter than your stock wheels.. Plus, the OP is leaning towards niche wheels.. m142 to be exact which are cast.. and in 20's they will be heavier than the stock 18 inch wheels.

You said big wheels makes acceleration slower and throws off your speedometer, which is wrong. It all depends on the weight and rolling diameter of the wheel/tire combo compared to OEM. You can give as many examples as you want but the wheel size itself has nothing to do with it.

Quote:

Originally Posted by potmilkz

OP is running on stock 18's FYI.. and going to 20's.. exactly what i did.. so if you want to get "technical" then you should not be commenting as you do not have personal experience going from 18 to 20. BTW, i am on 35 series tire on my 20's.

The OP's current setup is irrelevant as I was replying to your statement about 19’s vs 20’s. If you want to get technical then you shouldn’t be commenting on going from 19’s to 20’s since you had 18’s.

I figured you had a 35 series tire...what's the width? The former means nothing without knowing the latter.

You’re right, based on OP’s current and potential setup acceleration will be slower and his speedo will be off slightly. You should be more specific if you’re gonna get defensive every time someone contradicts your vague posts.

 

Hey guys, thank you all so much for the input. I don't want the wheel to be any further than the fender, maybe a hair more but not much.

I found this http://www.1010tires.com/Tools/Wheel-Offset-Calculator

Going from 8"+55 offset ----> 9"+35 offset = 33mm expand extra.

Does that mean the 9" wheel will sit 33 mm further out than my stock 8" is sitting now?

So how much further out the wheel will sit is NOT just a matter of adding 1" (25.4mm) + 20mm form the offset difference giving you 45.4mm.
I was thinking it would sit 45.5 mm further out than where I am now with the stock 8".

 

You add half of the increase in width to the difference in offset. If you just increase the width of the wheel, then the fender side moves out by half of 1" (25.4 mm) or 12.2mm. Picture the wheel just getting wider on both sides but its still bolted on at the same point. In your case you are also changing the offset, pushing the wheel out further. So the that's why the calculator is saying 33mm. 20+25.4/2=32.7 or 33.

Here are a couple of fitments that are quite different but in both cases look very well done. The second being far more aggressive to the tune of about 28mm or just over an inch.

Take pasigna's vehicle here:
Wheel and tire spec:
19x8.5 +45 255/40/19

https://acurazine.com/forums/4g-tl-photograph-gallery-296/2010-tl-2012-mdx-advance-19-wheels-%5Btest-fit%5D-879747/

Take Grigio4G's vehicle here:
Wheel and tire spec:
20x10.5 +42 255/35/20

https://acurazine.com/forums/showthr...894660&page=11

The last shot of Grigo4G's car also shows some camber on his wheels, I'm not sure if that's intentional or just a result of his car being lowered. To your question of flush or not, I suspect these wheels are the closest to "flush", though they do look to be past the fender by 2-5mm.

Here is a thread that is discussing a variety of fitments, although most of the them are fairly aggressive with 20" wheels. I too am interested in 19" based on potmilkz advice that 19" ride better (depending on the amount of sidewall). 19" are also cheaper!

https://acurazine.com/forums/4g-tl-tires-wheels-suspension-298/4g-wheel-tire-specs-thread-pics-898010/

 

12.7 mm not 12.2 mm.