another tire size and will it hurt my transfer case Q

R

Ross L

Member
I've been running 245/45/17's and 315/35/17's on ZR1 wheels for about 2000 miles. The "tire calculators" show them the exact same size and I took it for fact. Well, I decided to measure them on the truck and there is slightly less than a 1/4" difference with the fronts being shorter. Now I'm paranoid that the difference is why my 40K mile trucks propshaft boot tore ( after all its only 20+ years old). And I'm worried I'm damaging the transfer case. Although I haven't been driving it due to the 95+ heat here. Anyone care to ease my fears or cause more;)
Thanks, Ross
 
J

johne30m3

Junior Member
Re: another tire size and will it hurt my transfer case Q

Ross L said:
I've been running 245/45/17's and 315/35/17's on ZR1 wheels for about 2000 miles. The "tire calculators" show them the exact same size and I took it for fact. Well, I decided to measure them on the truck and there is slightly less than a 1/4" difference with the fronts being shorter. Now I'm paranoid that the difference is why my 40K mile trucks propshaft boot tore ( after all its only 20+ years old). And I'm worried I'm damaging the transfer case. Although I haven't been driving it due to the 95+ heat here. Anyone care to ease my fears or cause more;)
Thanks, Ross
Click to expand...

I think your ok as they say be with in 1%, so a 245/45/17 is about 25 + inches tall and 1% of that would be .25 in or 1/4" so I would say your ok.
 
dgoodhue

dgoodhue

BuSTeD 4.3
Re: another tire size and will it hurt my transfer case Q

You can adjust your tire pressure. I use the same size front and rear and I have to adjust my tire pressure so both tires are approx the same size. I mark my tires with tape and drive in straight line down my street to adjust my tires. Right now I have 8psi more in the front than rear. The front tires wear faster than the rear so I have to adjust the pressure as the tires wear.
 
Typhoon1937

Typhoon1937

New member
Dabney Crump raced open road on this setup many times. No worries. I have had same set on my truck now for 10 yrs w/ no issues.


Sent from my iPhone using Tapatalk
 
R

Ross L

Member
Re: another tire size and will it hurt my transfer case Q

thanks for all the info:tup: The whine's(stock shaft, torn boot/no grease) gone after going with the bravada shaft. I'll just enjoy it now!
 
Jimmy

Jimmy

Banned
Re: another tire size and will it hurt my transfer case Q

I think it might be 275/35/17 and 315/30/17 that works.

Something like that.
 
You must log in or register to reply here.
Top