Hello. I searched and read in many places that it's acceptable. It's within the width range for Michelin PS4s. Anyone have good pictures of the this setup?

Thanks.

 

I know this isn't exactly what you're asking, but I run a 295/30R18 R888R (run wide) on a 18x10. The tires on the wheel measure 11-5/8" wide.

 

My FD has Enkie PF01 wheels 18X9 +42 front, 18X9.5 +45 rear. I use to run 255/35-18 Yokohama AD08R in the front and 285/30-18 in the rear. They fit perfectly and looked like a perfect fit.
My tires turned 4 years old and were starting to get hard last fall. Wanting to go to tires better in the rain, I replaced them with Michelin Pilot Sport 4S, 255/35-18 and 285/30-18.
The Michelin fronts fit like the AD08Rs did, perfect.
But the rears look about 1/2" wider on each side than the AD08Rs looked. They look too big for the rim even though the specs say OK.
I read many years ago that some tire companies will use the same carcass for multiple tire sizes and just change the tread width.

Since it is night, I will have to wait until tomorrow to take pictures.

 

Photos can not accurately display what the eyes can see.

 

dont mean to be nosy but what is the purpose of this setup? street? track? show?

do you really need to go that wide with the tire? it is expected to have some sidewall flexing; which you may not feel on the street but you will most likely feel it at the track

And as far as i know the PS4 runs wide

 

My setup is just for the street. If I new the Michelin 285/30-18 were that much wider, I would have gotten the 275s or something else.
As I said, the AD08R in the same size fit perfectly.

 

​​​​​Chuck

i was referring to the OP
I went with 275s on the 9.5 but I am concerned that it might be too wide for the 9.5 for the track setup
​​​​

 

front 18x9.5 +22 with a 285/30/18 AD08R - can be done





rear 18x10.5 +22 with a 285/30/18

 

I wouldn't say nosey. It's not a matter of power (which there isn't much). But 90% street/garage. Not a show or track car. I was trying to stay as close to 25" as possible while still keeping about an inch stagger from the front 8.5 and rear 9.5. My choices were 225/255 or 255/285 (295 would be 25" but that's definitely too wide for 9.5"). I opted for going a little wide in the rear versus fairly narrow in the front. Been wanting to try PS4s for a while. Michelin, Bridgestone and Falken definitely run wide.

 

So here's how it turned out. Will get around to a new alignment (still same as originally purchased over 8 years ago). Then will either roll rear fenders or more likely just make sure not to set too low while on this setup.

Wheels offsets are +38 f/r.

 

looks like a woman trying on her 20 year old wedding dress

 

I don't disagree. Being as 225 is too narrow for the 8.5" in my opinion, at some point it'll likely be 255 all around. Or I'll look for what 265/35 looks like when the time comes.

 

265 or 275 for sure.

 

Looks good LT


Not seeing the muffin top you are alluding to on my setup, but honestly I am chasing track focused mechanical grip vs aerodynamic grip and will be working on dialing in a three-way adjustable JRZ coilover set up... all trying to pull back a less than ideal -3* camber setup. Say what you want on the setup, I am still smiling from ear to ear lap after lap behind my visor

Our wants and desires may vary slightly
Moving to more size appropriate (albeit taller than I want... may swap back to 285's all around after) 265's up front and 295's in the rear
I do see some good muffin top on my 255/40/17's on an 8.5's all around though

Here's what a 265 on a 9.5 EC-7R looks like

Honestly, those manufacturer recommendations are there for a reason. What works for one set up could be drastically different depending on wheel (knurled lip, manufactured process, made on a Friday afternoon) and tire (compound, sidewall flex, quality) - make moves at your own risk

 

Thanks. Don't think I said (or meant to say) anything about the way your setup looked though. I actually think the advans you have take much better to it than my Michelins do. Just a little bummed I can't go lower without more work than I want to do to my rear fenders.

Thanks for your and everyone else's help and support.

 

somebody once told me: … if the tire is that wide, then the wheel might as well be too.

In reality, pinching the tire does decrease the fitted tread width some, but that’s where the muffin top effect starts to creep in, depending on the tread-face vs sidewall stiffness relationship. Tends to be more an issue with radial race tires than radial street tires

just out of curiosity, how close to rubbing is it on the inside? It seems like you possibly could have gone with a deeper offset than +38 on a 9.5” rear wheel maybe? I’m not really clear on how far in the tire/wheel can go before the one suspension arm needs to be offset inward to avoid rubbing.
.

 

All good and no offense taken my friend - point I was trying to make was on the many variables between exact tire and wheel size that will lead to differing results

Best of luck with the setup - you're off to a great start

 

There's room inside. I just didn't have the luxury of specing out the wheels. I've been wanting BBS LM and a decent deal came up so this is what I'm working with. I'd love to get the 18x9 +42 and 18x10 +50 set, but those have long since been discontinued and rarely pop up for a reasonable price.

 

i run a 275 re71r on 9.5s on my track setup and its perfect. very little tire deflection as the tire is pretty square and not pinched at all.