Question

fins · 08-24-2016, 03:17 PM

If I move my rear 245/45-18 tires to the front, what recommended size rear tire replacements should I get?

SlyZGuy · 08-24-2016, 09:35 PM

275/40/18 would be exact same diameteras would 315/35/18 but they don't necessarily need to be exact. I would probably go 285

Check here for reference: https://tiresize.com/comparison/

fins · 08-24-2016, 10:03 PM

Thx, Sly, for helping out this noob

fins · 08-24-2016, 10:48 PM

another question. The rear stockers are 245/45R-18 while your recommendation is 275/40ZR-18. That's the only Potenza RE050A available in the 275. Is the difference in R vs. ZR negligible?

POS VETT · 08-25-2016, 06:57 AM

The "Z" is speed rating, it has nothing to do with OD.

fins · 08-25-2016, 07:31 AM

Quote:

Originally Posted by POS VETT

The "Z" is speed rating, it has nothing to do with OD.

Actually the 275 tire is Y rated while the 245 is W. Is it ok to mix?

POS VETT · 08-25-2016, 06:39 PM

Are you planning to drive it beyond 168 mph for a sustained amount of time?

SlyZGuy · 08-25-2016, 08:00 PM

this!

fins · 08-28-2016, 06:25 PM

Quote:

Originally Posted by POS VETT

Are you planning to drive it beyond 168 mph for a sustained amount of time?

08-24-2016, 03:17 PM	#1 (permalink)
fins Base Member Join Date: Oct 2010 Location: Ellisville, MS Posts: 152 Drives: 14 370Z, T, PW/G, AT Rep Power: 15	Question If I move my rear 245/45-18 tires to the front, what recommended size rear tire replacements should I get?

08-24-2016, 09:35 PM	#2 (permalink)
SlyZGuy Base Member Join Date: Jan 2016 Location: Maryland Posts: 220 Drives: 2014 370z S/C M6 Rep Power: 9	275/40/18 would be exact same diameteras would 315/35/18 but they don't necessarily need to be exact. I would probably go 285 Check here for reference: https://tiresize.com/comparison/ __________________ Stillen S/C \| '15 Nismo Conversion \| Aodhan \| Eibach \| Tokico \| SPC \| Z1 \| Evo-R \| Aerojacket \| HKS \| Berk \| CFE \| APR \| Amuse \| Z1 \| A2A IC \| AAM \| Buddy Club \|

08-24-2016, 10:03 PM	#3 (permalink)
fins Base Member Join Date: Oct 2010 Location: Ellisville, MS Posts: 152 Drives: 14 370Z, T, PW/G, AT Rep Power: 15	Thx, Sly, for helping out this noob Last edited by fins; 08-24-2016 at 11:14 PM.

08-25-2016, 08:00 PM	#8 (permalink)
SlyZGuy Base Member Join Date: Jan 2016 Location: Maryland Posts: 220 Drives: 2014 370z S/C M6 Rep Power: 9	this! __________________ Stillen S/C \| '15 Nismo Conversion \| Aodhan \| Eibach \| Tokico \| SPC \| Z1 \| Evo-R \| Aerojacket \| HKS \| Berk \| CFE \| APR \| Amuse \| Z1 \| A2A IC \| AAM \| Buddy Club \|

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08-24-2016, 10:48 PM	#4 (permalink)
fins Base Member Join Date: Oct 2010 Location: Ellisville, MS Posts: 152 Drives: 14 370Z, T, PW/G, AT Rep Power: 15	another question. The rear stockers are 245/45R-18 while your recommendation is 275/40ZR-18. That's the only Potenza RE050A available in the 275. Is the difference in R vs. ZR negligible?

08-25-2016, 06:57 AM	#5 (permalink)
POS VETT Track Member Join Date: Apr 2015 Location: Columbus OH Posts: 612 Drives: Z34\|C4LT4\|C6Z06\|V25 Rep Power: 3366	The "Z" is speed rating, it has nothing to do with OD.

08-25-2016, 06:39 PM	#7 (permalink)
POS VETT Track Member Join Date: Apr 2015 Location: Columbus OH Posts: 612 Drives: Z34\|C4LT4\|C6Z06\|V25 Rep Power: 3366	Are you planning to drive it beyond 168 mph for a sustained amount of time?