[Z06] running 275 vs 265 in front .. issues
Thread Starter
Le Mans Master
Joined: Oct 2000
Posts: 6,209
Likes: 33
From: Texas-out west
running 275 vs 265 in front .. issues
stock 295 in back, either 265 or 275 x 35 x 18 in front, any issues this will cause....265x35/18 is same diameter as stock 17" tire. would I get understeer, oversteer or ??? thanks.
Thread Starter
Le Mans Master
Joined: Oct 2000
Posts: 6,209
Likes: 33
From: Texas-out west
I thought of 275 ibecause there is more sidewall height which give more cushion...265 has less than 4" of sidewall and the 275 has slightly over 4" which is closer to stock 17 inch wheel. don't really want the understeer even though I don't track car, thanks.
Drifting
Joined: Jan 2014
Posts: 1,285
Likes: 164
From: MA
I noticed no difference going to 275/40/17 Nitto NT05, doesn't look weird either
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
if you want cushion use a soft sidewall tire like the conti dw. they are a very comfort oriented sport tire and really not all that bad of a performer
very quick tires like the michelin pss has a much better turn in, stability and overall limit, but, they do ride a bit more firm.
my vote is still to get the pss but i will admit the dw is a softer sidewall tire and like going to feel more compliant...keep in mind the drawbacks of compliant sidewalls before you buy
Last edited by racebum; Jul 15, 2015 at 02:55 PM.
Thread Starter
Le Mans Master
Joined: Oct 2000
Posts: 6,209
Likes: 33
From: Texas-out west
I bought the DWs last month and HATE them, to squirmy and unsure feeling for me so going to PSS, tire rack has back order on back tires and discount doesn't list them but will check for me. I mis spoke in that the 265/35/18 has 3.65" sidewall and the 275/35/18 has 3.76 and the stock 265/40/17 has 4.17 sidewall.
Melting Slicks
Joined: Aug 2010
Posts: 2,855
Likes: 78
From: Sammamish WA
WA Events Coordinator
Understeer - front loses traction in turns
Oversteer - rear loses traction in turns
All adjustable if you have adjustable sways front and rear...
I have 275's up front, no issues though the sidewall is tad taller then I like visually....
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Burning Brakes
Joined: Feb 2005
Posts: 1,201
Likes: 14
From: Honolulu, HI
It's been awhile since I moved away from the stock sizes but you'll notice more of a difference just on the fact that you replaced the tires. It doesn't change the car really IMO.
Now I used NT05 for a long time (275/295) but recently moved to R888 (275/305).
With the 305 rear I swear it's feels softer.
Now I used NT05 for a long time (275/295) but recently moved to R888 (275/305).
With the 305 rear I swear it's feels softer.
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
Adding more grip up front means adding more "oversteer"....
Understeer - front loses traction in turns
Oversteer - rear loses traction in turns
All adjustable if you have adjustable sways front and rear...
I have 275's up front, no issues though the sidewall is tad taller then I like visually....
Understeer - front loses traction in turns
Oversteer - rear loses traction in turns
All adjustable if you have adjustable sways front and rear...
I have 275's up front, no issues though the sidewall is tad taller then I like visually....
raising the front height will add understeer which must have been the thought on my mind when i said those two things
Drifting
Joined: Oct 2011
Posts: 1,980
Likes: 10
From: Crook County
I am running 275/35/18 up front, But I am running 305/35/19 DR's out back soooo I don't know how much this would help you. But It rides perfect, I am assuming you are worried about the TC going wacky because of the tire heights! As long as you keep it over a 1/4 taller out back you are fine...
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
100% my vote for someone wanting a cosmetically correct OE replacement tire on the c5z. before i went 19/18 for the pss i was considering the nt05 simply because they look so good on the stock wheels and are 90-95% of the performance of the slightly undersize 285/255 hankook rs3
sure the DW is better in rain but it is much less responsive & worse in the dry
Last edited by racebum; Jul 17, 2015 at 05:32 PM.
Melting Slicks
Joined: Jun 2002
Posts: 2,591
Likes: 144
From: Mobile al
I run 275/35/18 in front a 9.5 wheel and a 295/35/18 rear on a 10.5 wheel, tires are a Michelin PSS.
I had the Conti DW, hated them....felt like marshmallows. Sent them back to Tire Rack.
My car feels balanced, if you don't track the car and have that set of senses tuned very high I doubt you would notice any push(understeer) on the street unless you had badly mismatched tires.
I had the Conti DW, hated them....felt like marshmallows. Sent them back to Tire Rack.
My car feels balanced, if you don't track the car and have that set of senses tuned very high I doubt you would notice any push(understeer) on the street unless you had badly mismatched tires.