285/30-18 on 9.5" wheel
#1
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285/30-18 on 9.5" wheel
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.
Thanks.
#3
Eye In The Sky
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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.
#5
Rotor or no motor
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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
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
#6
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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.
As I said, the AD08R in the same size fit perfectly.
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#9
Junior Member
Thread Starter
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
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
Last edited by LT 562; 02-11-22 at 11:12 PM.
#10
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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.
Wheels offsets are +38 f/r.
Last edited by LT 562; 02-12-22 at 02:38 AM.
#12
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#14
rotary amuse
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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
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
Originally Posted by LT 562
Or I'll look for what 265/35 looks like when the time comes.
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
#15
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Thanks for your and everyone else's help and support.
#16
10000 RPM Lane
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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.
.
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.
.
Last edited by TeamRX8; 02-13-22 at 12:35 PM.
#18
Junior Member
Thread Starter
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.
.
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.
.
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