Zero offset wider tires for 19" Sport 370Z?

ped · 08-03-2013, 01:33 PM

Anyone know what size tires you can replace stocks on the 2013 370Z with sports (Rays forged 19" wheels) and maintain the speedo correctly? I think the term I heard when I had a G37S was "zero offset" - idea being you get slightly wider tires but also slightly lower profile such that the overall tire height stays the same and thus the speedo isn't affected.

chrischhorn · 08-03-2013, 01:49 PM

Quote:

Originally Posted by ped

Anyone know what size tires you can replace stocks on the 2013 370Z with sports (Rays forged 19" wheels) and maintain the speedo correctly? I think the term I heard when I had a G37S was "zero offset" - idea being you get slightly wider tires but also slightly lower profile such that the overall tire height stays the same and thus the speedo isn't affected.

305/30 is where most people go on the rears and 265/35 on front. Front's are slightly shorter but rears match 100% (where the speedo reads from with the trans and diff)

Waiz · 08-05-2013, 06:04 PM

Use this page:

Tire size calculator

For instance, 275-35-19 and 285-35-19 is 60.6 mph vs 60 mph normally

305-30-19 = 59.2 mph instead of 60 normally, so not really a big deal at all

ped · 02-10-2016, 09:55 PM

The tire size calculator will tell about the speedo but how about in terms of fit? What sizes will look best on fully stock Rays size rims? Do any of the sizes discussed rub?

90 ST · 02-10-2016, 11:07 PM

305/30 fits with no problem, lots of room and is as wide as you should go on a 10" sport wheel.

ped · 02-13-2016, 02:44 PM

Has anyone determined how much of an issue wider tires presents for throwing rocks onto the fenders?

90 ST · 02-13-2016, 08:16 PM

Not enough to worry about. Just do it!

barncobob · 02-14-2016, 06:52 AM

305 is a HUGE tire, had them on my 997...id be more concerned about extra weight of tire,,,this can all be found at tire rack under specs

ped · 03-01-2016, 11:20 AM

Any opinions on whether moving from stock 19" Rays tire sizes will adversely affect handling, turn-in responsiveness/ability or braking?

RumbleFish · 03-01-2016, 12:18 PM

Quote:

Originally Posted by barncobob

305 is a HUGE tire, had them on my 997...id be more concerned about extra weight of tire,,,this can all be found at tire rack under specs

S-04 305/30 = 33lbs, 285/35 = 32lbs, 285/30 = 30lbs

RE-11 305/30 = 32lbs, 285/35 = 31lbs

Not a huge dif.

08-03-2013, 01:33 PM	#1 (permalink)
ped Enthusiast Member Join Date: May 2013 Location: Dallas, Texas Posts: 258 Drives: 2013 370Z Rep Power: 11	Zero offset wider tires for 19" Sport 370Z? Anyone know what size tires you can replace stocks on the 2013 370Z with sports (Rays forged 19" wheels) and maintain the speedo correctly? I think the term I heard when I had a G37S was "zero offset" - idea being you get slightly wider tires but also slightly lower profile such that the overall tire height stays the same and thus the speedo isn't affected. Jimc likes this.

08-05-2013, 06:04 PM	#3 (permalink)
Waiz A True Z Fanatic Join Date: Apr 2010 Location: SoCal Posts: 9,257 Drives: Z33 & GE8 Rep Power: 459	Use this page: Tire size calculator For instance, 275-35-19 and 285-35-19 is 60.6 mph vs 60 mph normally 305-30-19 = 59.2 mph instead of 60 normally, so not really a big deal at all Hotrodz, andbui05 and ped like this.

02-10-2016, 09:55 PM	#4 (permalink)
ped Enthusiast Member Join Date: May 2013 Location: Dallas, Texas Posts: 258 Drives: 2013 370Z Rep Power: 11	The tire size calculator will tell about the speedo but how about in terms of fit? What sizes will look best on fully stock Rays size rims? Do any of the sizes discussed rub? 90 ST likes this.

02-10-2016, 11:07 PM	#5 (permalink)
90 ST A True Z Fanatic Join Date: May 2010 Location: Calgary Posts: 1,861 Drives: 90 and 15 GMC Sierra Rep Power: 420	305/30 fits with no problem, lots of room and is as wide as you should go on a 10" sport wheel. __________________ Not driving your car to keep it in nice shape, is like not wanting to smash your girlfriend so she stays tight for the next guy.

02-13-2016, 08:16 PM	#7 (permalink)
90 ST A True Z Fanatic Join Date: May 2010 Location: Calgary Posts: 1,861 Drives: 90 and 15 GMC Sierra Rep Power: 420	Not enough to worry about. Just do it! ped likes this. __________________ Not driving your car to keep it in nice shape, is like not wanting to smash your girlfriend so she stays tight for the next guy.

02-13-2016, 02:44 PM	#6 (permalink)
ped Enthusiast Member Join Date: May 2013 Location: Dallas, Texas Posts: 258 Drives: 2013 370Z Rep Power: 11	Has anyone determined how much of an issue wider tires presents for throwing rocks onto the fenders?

02-14-2016, 06:52 AM	#8 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 589	305 is a HUGE tire, had them on my 997...id be more concerned about extra weight of tire,,,this can all be found at tire rack under specs ped likes this.

03-01-2016, 11:20 AM	#9 (permalink)
ped Enthusiast Member Join Date: May 2013 Location: Dallas, Texas Posts: 258 Drives: 2013 370Z Rep Power: 11	Any opinions on whether moving from stock 19" Rays tire sizes will adversely affect handling, turn-in responsiveness/ability or braking?

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