Dealing with a flat tire

sjwinfrey · 02-24-2011, 08:49 AM

I recently purchased a 2011 370Z and was pleasantly surprised to learn that it contained a temporary spare tire - I was expecting a can of Slime blow-up! However on closer inspection I noticed it was an 18 inch tire whereas the ones on the ground are 19s. I'm certainly no tire expert, but would have expected that all the wheels be the same diameter. I would guess the the temporary 18 could be mounted on the front with no problem as there is no differential to damage. However, putting an 18 on the rear with the same drive shaft with a 19 could cause a problem.

If faced with this situation, my plan would be to put the temporary 18 on the front, and use the good 19 front tire on the rear. Does this sound like a plan? I know that the rear whels can't be mounted on the front, but is there any reason the the front tire couldn't be mounted on the rear?

Red__Zed · 02-24-2011, 09:06 AM

Placing the spare up front is SOP for RWD cars with staggered fitment. You don't want a skinny out back.

red6spd · 02-24-2011, 09:09 AM

The spare wheel and tire combo should be just as tall as the 19in wheel and tire, I am pretty sure thats all that matters. So theres is less wheel but more tire.

Red__Zed · 02-24-2011, 09:10 AM

Quote:

Originally Posted by red6spd

The spare wheel and tire combo should be just as tall as the 19in wheel and tire, I am pretty sure thats all that matters. So theres is less wheel but more tire.

Is it the same diameter overall? I haven't checked and was wondering about it.

red6spd · 02-24-2011, 09:12 AM

Quote:

Originally Posted by Red__Zed

Is it the same diameter overall? I haven't checked and was wondering about it.

Ummm... Not sure. There is no warnings so putting it on the back should be safe for a car with a LSD. I'm sure it fits as well.

Red__Zed · 02-24-2011, 09:14 AM

Quote:

Originally Posted by red6spd

Ummm... Not sure. There is no warnings so putting it on the back should be safe for a car with a LSD. I'm sure it fits as well.

It will, it's just bad practice to put a skinny out back. You'll wind up smoking the tire every time you accelerate.

m4a1mustang · 02-24-2011, 09:17 AM

Well keep your foot out of it, then! All the spare is designed to do is get you safely to a tire shop.

The offsets are turrible, though:

sjwinfrey · 02-24-2011, 09:20 AM

The owners manual does warn against driving more than the absolutely minimal amount due to possible differential damage.

Red__Zed · 02-24-2011, 09:31 AM

Quote:

Originally Posted by m4a1mustang

Well keep your foot out of it, then! All the spare is designed to do is get you safely to a tire shop.

The offsets are turrible, though:

You should write Nissan. I can't believe they wouldn't give us a spare with good offsets

Trips · 02-24-2011, 09:52 AM

kenchan · 02-24-2011, 11:47 AM

Quote:

Originally Posted by Red__Zed

You should write Nissan. I can't believe they wouldn't give us a spare with good offsets

LOL!!!

we need to look good 100% of the time.

yah, OP, dont worry about the 18". with the taller profile (sidewall) it's near the 19"s size overall.

it's not perfect but it's only meant to be used max 100miles 50mph or something just to get you home or watnot.

m4a1mustang · 02-24-2011, 01:50 PM

Need a 35mm spacer!

Big J · 02-24-2011, 02:40 PM

Just put the spare in the back, those tires like to let out some smoke lol.

02-24-2011, 08:49 AM	#1 (permalink)
sjwinfrey Base Member Join Date: Feb 2011 Location: Centralia, IL Posts: 3 Drives: 2011 370Z touring Rep Power: 14	Dealing with a flat tire I recently purchased a 2011 370Z and was pleasantly surprised to learn that it contained a temporary spare tire - I was expecting a can of Slime blow-up! However on closer inspection I noticed it was an 18 inch tire whereas the ones on the ground are 19s. I'm certainly no tire expert, but would have expected that all the wheels be the same diameter. I would guess the the temporary 18 could be mounted on the front with no problem as there is no differential to damage. However, putting an 18 on the rear with the same drive shaft with a 19 could cause a problem. If faced with this situation, my plan would be to put the temporary 18 on the front, and use the good 19 front tire on the rear. Does this sound like a plan? I know that the rear whels can't be mounted on the front, but is there any reason the the front tire couldn't be mounted on the rear?

02-24-2011, 09:09 AM	#3 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	The spare wheel and tire combo should be just as tall as the 19in wheel and tire, I am pretty sure thats all that matters. So theres is less wheel but more tire. __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

02-24-2011, 09:17 AM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Well keep your foot out of it, then! All the spare is designed to do is get you safely to a tire shop. The offsets are turrible, though: __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-24-2011, 09:20 AM	#8 (permalink)
sjwinfrey Base Member Join Date: Feb 2011 Location: Centralia, IL Posts: 3 Drives: 2011 370Z touring Rep Power: 14	warning in owners manual The owners manual does warn against driving more than the absolutely minimal amount due to possible differential damage.

02-24-2011, 09:52 AM	#10 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,728 Drives: 🔰 Rep Power: 10	__________________

02-24-2011, 09:06 AM	#2 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	Placing the spare up front is SOP for RWD cars with staggered fitment. You don't want a skinny out back.

02-24-2011, 01:50 PM	#12 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Need a 35mm spacer! __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-24-2011, 02:40 PM	#13 (permalink)
Big J Track Member Join Date: Jun 2010 Location: Memphis Posts: 905 Drives: 370z Rep Power: 15	Just put the spare in the back, those tires like to let out some smoke lol.

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