How wide tires affect overall performance

DEpointfive0 · 09-25-2013, 06:19 PM

Quote:

Originally Posted by skidad62

Will 305s on Rays clear without camber if I'm running 25mm spacers?

I kinda doubt it.

I have a 20mm which I might have to remove or make 15mm (I'm also going to remove most my camber with a camber kit)

cv129 · 09-25-2013, 06:22 PM

If you go 245/305, it'll be interesting to get adjustable front camber arms and dial in a little more negative camber to increase efficiency of the front tires during cornering, offset the "plow" that the huge stagger will cause

member Nismo09 runs the SPL front arms, he dialed in lots more negative camber and he's on stock nismo setup (40mm stagger), and the steering has come to life quite a bit

Hotrodz · 09-25-2013, 09:58 PM

It just like folks have stated it all depends, if you track add camber and you can't get stiff enough in the front, but if you daily drive and want run camber for looks a spirited driving, you are going to need a fund for tire replacement. I have 305s rear and 265s up front. I bought rear camber arms and toe bolts so that I could run them at factory settings. There is under steer, but grip is much better over all. I'm running SO-4s.

synolimit · 09-25-2013, 11:39 PM

Quote:

Originally Posted by FortuneLSX-TT

I tried looking online, and you're right I'm getting a lot of conflicting information. The bottom line was "it depends" and its all about balance. Increased stiffness may increase grip, but then again going too far reduces it. The best I understand it now is thus: (if someone understands it better please correct me if I'm wrong)

The front is looser than the rear under that scenario. Which means the front rolls a bit more, and since the rear doesn't roll it has to slide. So it's all about the balance of the two.

I'd still think that softening the front relative to the rear would be the way to increase overall traction. I.e. upgrade both front and rear, but put rear on stiffer and the front on softer. So both bars are stiffer than stock, but the rear increases stiffness more than the front.

Suspension is confusing...

Most auto x guys run no rear and a hard front. Doran runs a huge front! I now have a stock rear and whiteline front set to full hardness. It feels fine but still lots of body roll! Dare I say feels like more body roll than stock? But stock alignment blows and left to rights are off 0.5* on both so no report till I finish what I want.

/Angelo350Z/ · 09-26-2013, 02:16 AM

The bigger the difference in front and rear tire widths, the more the car will understeer. Car manufacturers started using staggered tire sizes on sports cars mainly for safety reasons. Of course, there's also the extra grip advantage.

Apoc370z · 09-27-2013, 04:15 AM

Quote:

Originally Posted by Chuck33079

MAybe you sacrifice acceleration, maybe not. If you can apply more throttle without spinning the tires, you're going to accelerate faster.

Wider tires will improve your handling in the dry. In rain or snow, it will hurt handling. A 305 may be overkill unless you're putting down serious power.

What would you recommend for a street tire for both looks and performance? Wheels are 19x9 +15, 19x10.5+15, might lower with swift spring in the near future

i know i cant have best of both worlds but i am more than willing to balance them out.

Apoc370z · 09-27-2013, 04:17 AM

Quote:

Originally Posted by kenchan

if you're just streeting the car, just use stock size. maybe go 285/35/19 on the rear which is nismo size.

otherwise it's really overkill imho and just weights down the car.

quality stock size tires > cheap wide tires

I was worry about 305s weighing down the car, especially with the added weight of the wheels.

by no means i am looking for cheap tires, but i want something that will look good but wont affect daily driving

Chuck33079 · 09-27-2013, 07:57 AM

Quote:

Originally Posted by Apoc370z

What would you recommend for a street tire for both looks and performance? Wheels are 19x9 +15, 19x10.5+15, might lower with swift spring in the near future

i know i cant have best of both worlds but i am more than willing to balance them out.

The forum consensus is RE-11s or Michelin PSS. Weight is going to vary depending on the tire.

DEpointfive0 · 09-27-2013, 10:33 AM

Quote:

Originally Posted by Chuck33079

The forum consensus is RE-11s or Michelin PSS. Weight is going to vary depending on the tire.

For strict DD-ing, you want PSS.

And PSS's are LIGHT. The lightest tire I have seen in any/every size

Chuck33079 · 09-27-2013, 10:36 AM

Quote:

Originally Posted by DEpointfive0

For strict DD-ing, you want PSS.

And PSS's are LIGHT. The lightest tire I have seen in any/every size

PSS is going to be my next set, unless Dunlop makes their star spec replacement in the right sizes. Star specs were awesome.

It's going to be a while, since I just picked up a set of Nismo wheels with fresh OEM rubber.

DEpointfive0 · 09-27-2013, 10:37 AM

Quote:

Originally Posted by Chuck33079

PSS is going to be my next set, unless Dunlop makes their star spec replacement in the right sizes. Star specs were awesome.

You wouldn't want something stickier at the expense of road noise for the TT?

Chuck33079 · 09-27-2013, 10:39 AM

Than the PSS? Maybe. It's a DD, so noise is a concern. So far, I've been pretty impressed with the stock Nismo rubber.

DEpointfive0 · 09-27-2013, 10:42 AM

PSS are sticky... For DD tires, I guess it depends what all is happening or you're doing with it, and in hot àss Houston, if the PSSs get really hot you'll lose grip. RE-11's can take more heat, but more noise

Chuck33079 · 09-27-2013, 10:45 AM

It'll be a while before it's an issue. It looks like I'll go through two sets of rears before I need new fronts.

DEpointfive0 · 09-27-2013, 10:48 AM

^Same, lol

09-25-2013, 06:22 PM	#32 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,222 Drives: 09 Nismo, 16 Nismo Rep Power: 163995	If you go 245/305, it'll be interesting to get adjustable front camber arms and dial in a little more negative camber to increase efficiency of the front tires during cornering, offset the "plow" that the huge stagger will cause member Nismo09 runs the SPL front arms, he dialed in lots more negative camber and he's on stock nismo setup (40mm stagger), and the steering has come to life quite a bit Last edited by cv129; 09-25-2013 at 06:24 PM.

09-25-2013, 09:58 PM	#33 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	It just like folks have stated it all depends, if you track add camber and you can't get stiff enough in the front, but if you daily drive and want run camber for looks a spirited driving, you are going to need a fund for tire replacement. I have 305s rear and 265s up front. I bought rear camber arms and toe bolts so that I could run them at factory settings. There is under steer, but grip is much better over all. I'm running SO-4s. wheee! likes this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

09-26-2013, 02:16 AM	#35 (permalink)
/Angelo350Z/ A True Z Fanatic Join Date: Feb 2013 Location: Germany Posts: 2,230 Drives: Z34 \| MK7 \| F82 Rep Power: 3660	The bigger the difference in front and rear tire widths, the more the car will understeer. Car manufacturers started using staggered tire sizes on sports cars mainly for safety reasons. Of course, there's also the extra grip advantage. __________________ 2013 MB NISSAN 370Z SPORT

09-27-2013, 10:39 AM	#42 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Than the PSS? Maybe. It's a DD, so noise is a concern. So far, I've been pretty impressed with the stock Nismo rubber. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

09-27-2013, 10:42 AM	#43 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	PSS are sticky... For DD tires, I guess it depends what all is happening or you're doing with it, and in hot àss Houston, if the PSSs get really hot you'll lose grip. RE-11's can take more heat, but more noise __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language: Last edited by DEpointfive0; 09-27-2013 at 10:45 AM.

09-27-2013, 10:45 AM	#44 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	It'll be a while before it's an issue. It looks like I'll go through two sets of rears before I need new fronts. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

09-27-2013, 10:48 AM	#45 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	^Same, lol __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

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