Hey guys .. can you guys chime in on the "best" tire size for the new set up?

- 19 - 9.5F and 10.5R

Most likely wont drop the Z this year .. so im thinking 275 in the rear .. but not sure .. 275/40? I dunno.

I dont want to roll fenders so what sizes do you guys think?

thx

 

i think the best choice for now is 275/35/19. Most of us with aftermarket rims that aren't FI'ed are running that size.

fronts you have an option between 245/35/19 and 255/35/19. I've ran both, and personally like 255/35/19 for the turn in. the grip feels pretty good!

with 10.5+24 and 275/35/19 tires, you're pretty safe and won't need a roll.

 

+1...even though if u go f1 u can easily fit a 315 on it....with a roll

 

+1 ^^^

I would run 275/35/19's rear & 255/35/19's in the front.

Finding those sizes in 40's might be hard.

 

Thats exactly what i was thinkin . i just needed that confirmation.

I didnt think of the 255F though...hmmm are you running that now ? That may be an option. I was thnking 245 b/c I was afraid of anything bigger would be rubbin with a 9.5F +17

My offest are 17/24

I went to a tire shop today and they were saying go 40 around ..

 

what are you stock tire sizes? mine were 245/45/18 for the rears, and 275/35/19 was the closes match in terms of overall diameter.

you can play with your overall diameters here:

http://www.1010tires.com/tiresizecalculator.asp

What was your tire shop's reasoning for going 40 profile?

 

stocker were

225/45 8 (front) and 245/45 18 (rear)

and it wasnt MY tire place ... ive just been calling for prices to see what i can find . they said this wil be closest to oem size

 

so the same as mine.

here are the comparisons...275/40/19 is way off. whatever tire place it was, they're probably lying cause that's what they have in stock and they're trying to get rid of it.

Stock Tire - 245/45R18 Tire 1 - 275/35R19 Tire 2 - 275/40R19
(S)Overall Diameter: 26.68 in 677.67 mm
(1)Overall Diameter: 26.57 in 674.87 mm
(2)Overall Diameter: 27.66 in 702.56 mm

(S)Sidewall Height: 4.34 in 110.23 mm
(1)Sidewall Height: 3.78 in 96.012 mm
(2)Sidewall Height: 4.33 in 109.98 mm

(S)Radius: 13.34 in 338.83 mm
(1)Radius: 13.28 in 337.31 mm
(2)Radius: 13.83 in 351.28 mm

(S)Circumference: 83.81 in 2128.7 mm
(1)Circumference: 83.47 in 2120.1 mm
(2)Circumference: 86.89 in 2207.0 mm

(S)Revs per Mile: 779.6
(1)Revs per Mile: 782.8
(2)Revs per Mile: 751.9

(S)Actual Speed: 60 mph 100 km/h
(1)Speedometer1: 60.2 mph 100. km/h
(2)Speedometer1: 57.8 mph 96.4 km/h

(S)Speedometer Difference: -
(1)Speedometer Difference: 0.410% too fast
(2)Speedometer Difference: 3.684% too slow

(S)Diameter Difference: -
(1)Diameter Difference: 0.42%
(2)Diameter Difference: 3.55%

 

play the the tire sizes on the link i posted, you can see for yourself. You can try and match the fronts if you want with 245/35/19 and 255/35/19.

 

you can try 275/30/19, 275/35/19. I ran that and it was pretty good. Or 265/35/19 in front.

 

As mentioned.
245-255/35/19 and 275-285/35/19.
Since you will have 9.5's in the front and 10.5's in the back I'd lean toward 255/ 285 myself. That was Strife's setup.

I have 8.5's in the front and 9.5's in the back and I have 245/35/19 and 275/35/19.



Whoever said 40 is WAY out to lunch.

 

Just call up one of the reputable shops that most of use and you should not have any issues..

 

Yep I am running 275F/R as well...best setup so far, give the Z a very neutral feeling.

 

Yea, I ran 255 and 285 f/r Sportcontact 2's... would highly recommend this setup. 275/35/19 on a 10.5" rear may look too stretched.

Keep in mind that section widths vary from manufacturer to manufacturer as well, even for the same published tire size. So a 285/35/19 from one manufacturer may end up being the same width (i.e. provide the same contact patch) as a 275/35/19 from another. Take a look at the published specs before buying.