Fudge Monkey

Installed Nitto 555 275/35/18 to replace Pirelli P-Zero 255/35/18 rears.

Pirelli P-Zero's felt greasy. They never hooked. Traction was inadequate.
Hard acceleration at 100KPH would result in wheel spin. Pirelli's spun at any speed. Strong smell of burning rubber when stopped from high speed acceleration.
If i did a highway pull, the tires smelt charred for a long time.
Pirelli's lasted 5,000KM. No burnouts, some spirited driving.

I installed Nitto 555's in 275.
No rubbing. Car hooks much better. No difference in road noise.
Side by side, the Nitto 275 is almost 1cm wider than the Pirelli 255.
The Nitto 275 is also 1 cm taller than the Pirelli 255.
Visually, the Nitto appears imposing installed. It visually suits the car better. It fills the wheel well nicely.

The rear does feel floaty. The car doesn't feel as sharp or razor as it did with the Pirelli 255's when highway cruising.
I'm not sure what this is about.

For anyone contemplating Nitto's or moving up to 275.

yellows2k

any reason u chose the 555 over the invo

Conv_GSDriver

My guess would be price. I'm on the same corner as well asking why go with 555s if you want to hook better, go with NT-05s but then again for a DD car the NTs might not be the answer for durability. There are many other tires to go with that perform better. They "feel good" now because they are brand new but my guess is that will go away quickly.

That aside, for the price it is a good tire, but for that same price range you might get some dunlops, hankooks or toyos.

yellows2k

i agree that the invo is a great value tyre, its only about $250 ea in australia. ive read various reviews, some say its great, some say its floaty and unresponsive. i figure if they last 10k km then its decent. i use my car as a daily. the stock contis have lasted 17k so far, and have about 3k left if that for the rears.
im not a fan of teh contis.
i figure i could either by decent such as the super sports, but they will be twice the price at around $400 or so a tyre. or i could go in between with the goodyear assm 2.
or i could just experiment with the invos

Fudge Monkey

Performance.

The tread pattern on the 555 appears to offer better forward traction than the Invo. Higher treadwear count too.
I've used 555s on Mustangs in the past. Did performed well then.

Diabolis

A 275 section tire should in theory be exactly 2 cm wider than a 255 section tire.

It's about installing a 275 section tire on a 9" wide rim. No bueno.

Fudge Monkey

Correct on points points.

Pirelli laid next to the Nitto, the difference didn't appear 2 cm.
Less.

If i had to do this again, i think i'll run ET streets on this daily driver.
Only way to put the power to the ground.

Or could i wet a wider rim and run 295'ish or 315'ish.
But can the wheel well accommodate that width or tire.

QWKSNKE

Tire choice plays a factor in this as well. My 275 michelin doesn't feel any different than a 255 which are to narrow for a 9" wheel

Diabolis

255 is the right size for a 9" wide rim, especially in a /35 or /30 aspect ratio tire (it's actually almost too wide, not too harrow).

Every tire has an approved rim width range, and for optimum cornering stability you want to be somewhere between the center and the widest rim width. Those 275/35-18 Nittos that the OP got require a 9"-11" rim; while they will mount on a 9" rim which is what he did, for them not to squirm he'd ideally need a 10.5" wide rim.

The rear wheelwell will accomodate up to a 275 tire, but in an 18" size you'd need at least a 10" wide rim if you don't want the tire to shift and squirm all over the place.

A 275/30-19 tire with stiff sidewalls might be OK on a 9.5" wide rim as the sidewall is shorter so you wouldn't get as much flexing.


295 or 315 on a C63... keep dreaming.