Nissan 370Z Forum - Why you should use these tires with NISMO Wheels: 285/35R19 (F), 325/30R19 (R)

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- - Why you should use these tires with NISMO Wheels: 285/35R19 (F), 325/30R19 (R) (http://www.the370z.com/wheels-tires/96741-why-you-should-use-these-tires-nismo-wheels-285-35r19-f-325-30r19-r.html)

Quote:

Originally Posted by VinceThe1 (Post 3194463)

Congratulations! I love this setup as well, and it's really affordable since it only calls for 2 tires initially (although an expencive 2 tires).

Those sidewall percentages you are looking at are really minute, the difference that matters is the overall diameter (how tall the tire is off the ground) and that's only 0.7% smaller (2.2mm shorter off the ground). That's why you can't notice it, because there's barely a difference. The 325s actually sit right between the Sport Package 275s and the Nismo 285s in overall diameter so you can't go wrong with that diameter.

I also noticed my ride a bit nicer, not as harsh which for our cars I can't say is a bad thing.

One thing that's puzzling me is the poke you have on the front.. Maybe the 285 yokohamas differ from the 285 kumho v12s I have on...but that's quite a difference. My rears are also perfectly flush to the fender without a spacer, but my fronts are about 5-6mm in, I'm really thinking of adding a 10mm spacer for the front because of that. How you have 1-2mm of poke in the front puzzles me...did you do an alignment to straighten your camber even more than original? Could the Nismo have different front suspension arms and/or knuckles...I doubt it but I don't know where that near 10mm difference is coming from on the front, and the rear is just like mine.

No alignment. I'm really not sure if I have different arms but I've heard the Yoko's run wider than a lot of tires. The poke is barely noticeable though, you really have to stare at it to notice. I plan on throwing RE-11s up front after these so we'll see how those sit.

What does everyone think about just keeping the front OEM 245/40-19 and widening up the rears to 325/30-19?

Quote:

Originally Posted by Imperial (Post 3195018)

What does everyone think about just keeping the front OEM 245/40-19 and widening up the rears to 325/30-19?

That's way too big a difference between front and rear.

Quote:

Originally Posted by Chuck33079 (Post 3195024)

That's way too big a difference between front and rear.

What would the draw backs be?

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More probability for oversteer

Quote:

Originally Posted by JaviZ (Post 3195036)

More probability for oversteer

More under steer. The fronts will lose grip before the rear.

Why you should use these tires with NISMO Wheels: 285/35R19 (F), 325/30R19 (R)

My research says understeer because the rears push harder but how bad would it be?

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Where are you researching?

Sorry, corrected.

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Quote:

Originally Posted by Imperial (Post 3195018)

What does everyone think about just keeping the front OEM 245/40-19 and widening up the rears to 325/30-19?

if you do anything, widen the front to 265/35/19 and leave the rear stock. It works well.

I kick myself everytime I read this thread, I should have put my 285's up front and put 325's on the rear.

Quote:

Originally Posted by Chuck33079 (Post 3195042)

More under steer. The fronts will lose grip before the rear.

Yea that's what I meant.

I have some base 18s laying around with the stock 225/50R18s they come with (front)...I should try putting them on the front and leaving the 325s in the rear to see if the 100mm difference would cause understeer. However, I doubt it since that's mainly based on the car's characteristics/weight distrubution/chassis than on the tires it has on. Width doesn't give you more grip, grippier tire compound does. So if you have grippy 225s in the front and not so grippy 325s (hard or impossible to find a non-sunmer tire in that size), you'll get oversteer, and if vise versa, you'll have underateer. If both front an rear are the same tire but just different size, the size difference wouldn't really affect the handling... Atleast not before a few hot laps where the narrower tires have a chance to heat up more and eventually overheat quicker, although being in the front of a RWD car wouldn't really affect them as much. This is why performance RWD cars call for a staggered fitment, so that the wider rear tires deal with the heat and wear better, while the front stay cooler and don't need to be as wide in comparison.

Quote:

Originally Posted by Imperial (Post 3195018)

What does everyone think about just keeping the front OEM 245/40-19 and widening up the rears to 325/30-19?

I though of doing that myself, however, the 245s on the 9.5" wheel look almost stretched, with the lip fully exposed. In comparrison to the rear, It wouldn't look right. With the 285s upfront, the front looks beefy and the in the rear, the 325s are even beefier. :tup:

Also, fat tires ftw!

Quote:

Originally Posted by Imperial (Post 3195055)

My research says understeer because the rears push harder but how bad would it be?

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If you really want to do that, just install 325s in the rear but keep your 285s. If you don't like the look/feel, replace the 245s with the 285s...you've got nothing to loose :driving:

That sounds plausible.

In other news, how was the difference in tire working out? I mean the ADVAN Sports are a very good OE tire, but how do they match-up with RE-11s? Did it handle good or under/over steer?