PDA

View Full Version : Tire Size Recommendations for 19x9.5



nene
February 2nd, 2016, 02:16
Folks,
I just ordered Klassen ID M53R setup on 19x9.5 et30 based on other posts I saw on the forum for wheel size that fits the RS6.
I am looking for recommendations on all season tires, or just tire size in general that would fit the 9.5 wheel width, that won't look too stretched and it won't rub.
I am thinking something around 275x30 for tire size.

I've had 295 in the past on 9.5 wheels in the rear but it gave a bit of muffin top look.
Thank you. I know many folks don't run such wide rims on the car, but a few have it, and looking to make the right buy on the tires with your help.


For fun here is a shot of my old 9.5 rear rims with 295 tires:
http://www.htms.org/img/082005/ctownrs6/ctownrs65.jpg

Image of the wheel I'm getting (it will be tinted brushed glossy, not silver matte)
https://farm1.staticflickr.com/630/21068434710_3396094da2_b.jpg

Turbowned
February 2nd, 2016, 02:39
So, what did you do with the Volks? I'm thinking 275/30 would fit best; let me know if you wanna go the Bridgestone route, 'cause I can get them a hair lower than the Tire Rack's pricing. Probably wouldn't trust my tire machine with those wheels, however.

DHall1
February 2nd, 2016, 03:05
This is a tough one.....

Really need to study section width and tread width charts. I have 9.5 et33

What suspension?

nene
February 2nd, 2016, 08:35
For suspension I have the KW v3. As for tires I am thinking of the Pilot Sport A/S 3 so far, given their load rating.
Would 275x25 be more suitable, even though it is slightly less sidewall?

Image of my current ride height. As you can see, I don't have it very low. I left a bit of gap.
http://www.htms.org/img/042013/BostonGravel03.jpg

http://www.htms.org/img/042013/BostonGravel02.jpg

Other_Erik
February 2nd, 2016, 11:22
19" wheels are going to give you a problem as far as stock tire size is concerned. Closest comparables are:

265/35-19 (1% larger) - speedo will read slower than actual speed
275/30-19 (2% smaller) - speedo will read faster than actual speed

Either way, you're throwing the speedo off enough to affect actual vs. presented mileage.

Very closest match I could find in a wider tire:
295/30-19 (<.25% smaller) - speedo will be nearly correct
But then you're going to end up rubbing on the inner fender well and casting nub on the suspension upright.

Personally, I'd recommend sticking with the tried and true, easy to find 255/35-19 - lots of late model sporty cars use them, and unless you're highly modified, you're not making the kind of power to break loose all 4 at once.
255/35-19 (0.02% smaller) - makes less difference than brand new vs. well-worn tread difference

O_E

s8prtotype
February 2nd, 2016, 20:16
On my 19x9.5 et28 i'll be running 285-35's this year :) Wheels have been refinished and will install tires soon.

nene
February 2nd, 2016, 22:37
Thanks for the great insight O_E. The only issue I have with still running 255 wide on the 9.5 wheel is that it may look stretched, and that is just not my beat.
I think the 275x30 is beginning to sound like the correct approach.
Thanks for everyone's input.

s8prtotype
February 3rd, 2016, 02:35
With that et on your wheels you're going to want at least 5-8mm spacers in the back, they won't be flush with the Michelin's.. This is exactly what i'm fixing and i'm at et28

My last set-up was 275-30 and they looked good on the car, (front was acceptable, rear needs at least 5mm to match front) but what i'm trying to do is fill the fenders with a little more meat and trying to stay away from using spacers if I can, I'm also going to lower the car a bit more so hopefully it'll look the way I want with the 285-35 (not a huge difference from what i can tell)

I'm not a fan of stretch at all, kinda like the way those 295's look on your old set :) Very aggressive!

s8prtotype
February 3rd, 2016, 03:02
BTW.. here is a tire size calculator link that's pretty helpfull

http://www.miata.net/garage/tirecalc.html

DHall1
February 3rd, 2016, 03:33
Every tire brand and model has different tread width, section width and diameter.

Not all 275/30s are the same.

30 sidewall does not leave much cushion for bad roads

Pss porsche fitment 265 35 19 fit nicely on 9.5 rims

I
Thanks for the great insight O_E. The only issue I have with still running 255 wide on the 9.5 wheel is that it may look stretched, and that is just not my beat.
I think the 275x30 is beginning to sound like the correct approach.
Thanks for everyone's input.

s8prtotype
February 3rd, 2016, 04:53
BMW M5's, M3's.. ect.. stock is 285-35 on 9.5's too :)

I agree on the 30 sidewall, make you grit your teeth on a few potholes... buy forged rims haha.

What i'm worried about is the front running this size, I don't think the rub nub has been removed yet.

mrdave
February 3rd, 2016, 15:38
Here are my PSS 255/35 r19 on 19x9.5 wheels. They're definitely stretched (a little too much for my taste, but they came with the wheels and have tread left so I'm using them for now).

17064 17065 17066

nene
February 3rd, 2016, 15:49
I want to thank everyone for the postings and it has been even more informative/educational than I originally expected. But this group is filled with Top Notch brain power, and it seems that I simply had set my bar too low. I sincerely thank you for all the extremely useful info.

I like what I saw in @mrdave post and as I suspected it would probably be a bit stretched. Although, in my mind it would have appeared more so than in reality.
I think the 265x35 appears to be the winner here. Thank you @Other_Erik and @DHall1 for this recommendation.

audisscott
February 3rd, 2016, 17:05
I'm very happy with 275/30's on my OZ's which are also 9.5" wide.

1706717068170691707017071

s8prtotype
February 3rd, 2016, 17:34
Audisscott what is the ET on those wheels? How close is it to the nub on the front? I forgot to check before i took mine off for refinishing.... :(

audisscott
February 3rd, 2016, 17:41
If I remember correctly they cleared with plenty of room and they are ET30 (no spacers used in photos).

nene
February 3rd, 2016, 18:11
I went with et30 as well, so it seems that was a good choice for offset. Those 275x30 tires look good.

bakes
February 3rd, 2016, 19:57
I had 275/30 Hankook v12's on my 19*10 rims and switched to 265/35 Michelin Pilot SS and the ride was much nicer (not as harsh). Two different tires so it may be hard to compare but I will be using 265's again when I replace my worn Michelin PSS.

nene
March 1st, 2016, 16:28
Very exciting to report that wheels are on their way home. Can't wait to see what they look like installed.
Will post once they're on.

nene
March 13th, 2016, 03:14
After everything I've learnt from this thread, here is how the whole thing came together in the end.

1. I ordered Michelin Pilot Sports A/S 3 and they are quite wide on 265x35x19. I would have been fine with 255x35x19 I think. The Michelin all-season tires seem wider in general then their summer only counterparts. The same is true even for 245x35 on the MX series.
I think it is important to look at the tire specs, specifically the "Section Width". TireRack is specifically good at giving you this information.

2. I had to grind down the little nip of metal that hangs from the upper control arm, otherwise the tires would not fit. Once I had help in getting rid of that little metal piece, all went according to plan. I have about the width of 1-2 credit car thickness between the rubber on the tire and the control arm.

3. You really have to be careful with 9.5 wide wheels, even with et30. They just fit under there up front. I think 9 wide wheels are the best all around option if you can find them. Major wheel manufacturers that build them custom can do anything you really want, which is great.

4. I was worried about the wheels up front, when I should have been worried about the rear as well. I upgraded the brakes in the rear when I went with the Mov'it setup, and the spokes on the rim just clear enough. Probably not a major issue for most folks, and only for this specific configuration I picked.

lswing
October 11th, 2020, 03:10
So how much does one grind that nub off the front upper control arm?

Also interesting, looking at the PSS 255/35/19 that MrDave posted photos of on a 9.5 wide rim, those are really stretched. The Sport 4S at 265/35/19 looks almost an inch wider on my 9.5 rims, even though it's supposed to only be .4 inch wider. Again, the 4S just appears to be a beefier tire than advertised, and I've seen that plenty with bike tires.

lswing
October 14th, 2020, 18:05
I'm going to get into the shop Friday to measure the tires, but here's a thread from a Beamer forum (I know, I know...) discussing the same thing. The 4S is a bulkier tire per the same measurements, just beware if you go the 4S route...they are about .3 to .5 inch wider than said factory spec it appears.

https://f80.bimmerpost.com/forums/showthread.php?t=1574777

kevcp
October 14th, 2020, 19:59
On my RS6 the "nub" is ground flush with the control arm.




So how much does one grind that nub off the front upper control arm?

Also interesting, looking at the PSS 255/35/19 that MrDave posted photos of on a 9.5 wide rim, those are really stretched. The Sport 4S at 265/35/19 looks almost an inch wider on my 9.5 rims, even though it's supposed to only be .4 inch wider. Again, the 4S just appears to be a beefier tire than advertised, and I've seen that plenty with bike tires.

lswing
October 15th, 2020, 16:47
On my RS6 the "nub" is ground flush with the control arm.

Cool, thanks. I can see how that nub point sticks out and is probably fine to grind down a bit, still not the biggest fan of doing it but seems fine.

nene
October 15th, 2020, 18:41
I had to grind mine down too.

lswing
October 17th, 2020, 20:00
I had to grind mine down too.

Thanks for the confirmation. My car must sit just low enough to rub due to the Koni yellow struts. I measured the new 4S and it's actually exactly to spec, 10.4 inches wide. I think once I grind the nub down it will still take a 5mm spacer, but I can live with that. Keeping 10mm on the rear I think to fill out the fitment.