Nissan GT-R Forum banner
1 - 9 of 9 Posts

·
Registered
Joined
·
39 Posts
Discussion Starter · #1 ·
Anyone tried this setup on oem wheels? I was looking at the michelin pilot super sport in this size as a possibility. This will balance the car a bit but potentially lose some grip in the rear. Also, it will reduce unsprung weight by a not so inconsequential 42lbs (18f/24r).

Any thoughts or opinions?

Thx!
Barry
 

·
Registered
Joined
·
872 Posts
It seems to me, the only thing you gain from this set up is cost savings. In every other category, it's a loss. What is your goal?
 

·
Registered
Joined
·
39 Posts
Discussion Starter · #4 ·
Well you're correct regarding cost savings. Issue is will 10mm less tire in the rear mitigate the 24lbs of weight savings in terms of performance? Doubtful imo but I could be wrong hence my question. Also with the additional 20mm and 18lbs weight savings upfront is significant positive with respect to reducing understeer. Overall grip maybe better as the PSS (though with a higher treadwear rating than OEM) have been viewed as an excellent track performer.

I guess there's only one way to know for sure - buy a set and try it out!

BC
 

·
Registered
Joined
·
872 Posts
The rotational mass savings will be realized with any non rf tire. understeer will be mitigated with any square set up or with sway bars......sooooo, why don't you go with a 285 or even a 295?
 

·
GTR Nerd
Joined
·
5,335 Posts
The odd question to ask is - how wide is the 275 and how wide is the 285? The same spec tire width can be different based on the brand. Just because it says - 285 or 275 they might be nearly the same width.

I like more tire, but I think that its not horrible going 275 all around.
 

·
Registered
Joined
·
39 Posts
Discussion Starter · #7 ·
The rotational mass savings will be realized with any non rf tire. understeer will be mitigated with any square set up or with sway bars......sooooo, why don't you go with a 285 or even a 295?
I was looking at the 275 as that the closest size (in terms of width and diameter) to stock that the PSS comes in.... 285/30 will be quite a bit shorter thus increasing wheel gap and the 295 won't work on a 9.5" rim. I was thinking about the PSS because of the good feedback on it's performance.

To Sean's comment above - I think the PSS runs a little wide because of a more square sholder (but I don't know that for a fact) but I also don't know if the OEM Dunlops "run wide" either so I may or may not stepping down a bit in width in the rear. Hard to determine without having a both tires in front of me.
 

·
Registered
Joined
·
6,720 Posts
I was looking at the 275 as that the closest size (in terms of width and diameter) to stock that the PSS comes in.... 285/30 will be quite a bit shorter thus increasing wheel gap and the 295 won't work on a 9.5" rim. I was thinking about the PSS because of the good feedback on it's performance.

To Sean's comment above - I think the PSS runs a little wide because of a more square sholder (but I don't know that for a fact) but I also don't know if the OEM Dunlops "run wide" either so I may or may not stepping down a bit in width in the rear. Hard to determine without having a both tires in front of me.
For those on a budget looking at non runflats I think the 275/35-20 choice for front and rear OEM wheels is a good one.

Cost per tire is much better.
Wider front tire will work on stock wheel and still give more front grip and less tendency to understeer- yet not be too wide to increase risk of rubbing if suspension is lowered.
Not as wide rear tire size will fit stock rear wheel and due to the overall tire on the 10.5" wide wheel will give enough traction for street use- not for track use.
Will work with either stock swaybars or with stiffer front and rear swaybar setup (preferred)
Size is close enough to stock tire diameter to still look good whether stock suspension or lowered suspension is used.
Weight is much better than with runflats, sidewalls much less stiff- better handling and ride comfort, less noise, better braking and acceleration.

Downside-
There is a limit to traction depending on which tire you choose. Michelin SuperSport is a good choice, not all tires are up to the task.
Your actual treadwear will vary with your driving style and road conditions, it might surprise you to wear out the tires pretty quickly.
No runflat protection
Not a good choice for track use unless you don't care about wear
Over time as the tire ages the rubber can become hard and noise or ride harshness could worsen.
 
1 - 9 of 9 Posts
Top