Anyone using 345/25r20
Thread Starter
Racer
Joined: Aug 2015
Posts: 342
Likes: 26
From: San Antonio Texas
St. Jude Donor '16
Anyone using 345/25r20
any one using the 345/25r20
our stock size
285/30R20 = 26.7x11.22R20
345/25R20 = 26.8x13.60R20
https://tiresize.com/calculator/
https://tiresize.com/tires/Nitto/Invo-345-25R20.htm
what size 18 inch tires are you guys running?
our stock size
285/30R20 = 26.7x11.22R20
345/25R20 = 26.8x13.60R20
https://tiresize.com/calculator/
https://tiresize.com/tires/Nitto/Invo-345-25R20.htm
what size 18 inch tires are you guys running?
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
There was a recent subject where someone was working with a 325/25-20 rear tire.
But put each tire size on its spec wheel width:
285 rear tire, 65mm rear wheel offset
295 rear tire, 70mm rear wheel offset
305 rear tire, 75mm rear wheel offset
315 rear tire, 80mm rear wheel offset
325 rear tire, 85mm rear wheel offset
Take a look at the Pilot Sport Cup 2 in 315/30-19 rear tire size. That goes on a 19 x 11 79mm rear wheel
.
But put each tire size on its spec wheel width:
285 rear tire, 65mm rear wheel offset
295 rear tire, 70mm rear wheel offset
305 rear tire, 75mm rear wheel offset
315 rear tire, 80mm rear wheel offset
325 rear tire, 85mm rear wheel offset
Take a look at the Pilot Sport Cup 2 in 315/30-19 rear tire size. That goes on a 19 x 11 79mm rear wheel
.
Last edited by B Stead; Nov 19, 2015 at 08:05 PM.
Thread Starter
Racer
Joined: Aug 2015
Posts: 342
Likes: 26
From: San Antonio Texas
St. Jude Donor '16
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
There was a recent subject where someone was working with a 325/25-20 rear tire.
But put each tire size on its spec wheel width:
285 rear tire, 65mm rear wheel offset
295 rear tire, 70mm rear wheel offset
305 rear tire, 75mm rear wheel offset
315 rear tire, 80mm rear wheel offset
325 rear tire, 85mm rear wheel offset
Take a look at the Pilot Sport Cup 2 in 315/30-19 rear tire size. That goes on a 19 x 11 79mm rear wheel
.
But put each tire size on its spec wheel width:
285 rear tire, 65mm rear wheel offset
295 rear tire, 70mm rear wheel offset
305 rear tire, 75mm rear wheel offset
315 rear tire, 80mm rear wheel offset
325 rear tire, 85mm rear wheel offset
Take a look at the Pilot Sport Cup 2 in 315/30-19 rear tire size. That goes on a 19 x 11 79mm rear wheel
.
Thread Starter
Racer
Joined: Aug 2015
Posts: 342
Likes: 26
From: San Antonio Texas
St. Jude Donor '16
We are in the same boat, but if those mt tires above will fit, I'll order a set of titanium bead locks or some forged aluminum ones for racing and keep a nice set of tires and wheels for the street, I got a battery and air impact so changing tires is not an issue
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Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
I know 315's fit, I'm not sure about 325's. I will have to see it to believe it, 335 or 345 never unless show only! Let's not forget how easy it is to break the rear inner fender lips right off!!
Last edited by savage; Nov 19, 2015 at 10:46 PM.
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
There's a minor problem with the 325 rear tire size at 85mm wheel offset.
A 325/30-19 tire has a more rounded shoulder and should be an easier tire fitment than a 325/25-20.
But a 325/25-20 has a wheel diameter with more suspension clearance.
The problem is choosing between the two. It is possible that some particular 19 x 12 85mm rear wheel will touch the suspension at full droop. But there is more tire choice in 325/30-19.
I like the Pilot Sport Cup 2 in 315/30-19 rear tire size and on a 19 x 11 79mm wheel. For various reasons, the front tire is a 295/30-19 on a 19 x 10.5 56mm wheel
.
A 325/30-19 tire has a more rounded shoulder and should be an easier tire fitment than a 325/25-20.
But a 325/25-20 has a wheel diameter with more suspension clearance.
The problem is choosing between the two. It is possible that some particular 19 x 12 85mm rear wheel will touch the suspension at full droop. But there is more tire choice in 325/30-19.
I like the Pilot Sport Cup 2 in 315/30-19 rear tire size and on a 19 x 11 79mm wheel. For various reasons, the front tire is a 295/30-19 on a 19 x 10.5 56mm wheel
.
Last edited by B Stead; Nov 19, 2015 at 11:30 PM.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 5,730
Likes: 270
From: VENTURA Ca
It's all about STICKY not BIG.
Nitto NT01 in 315-30-20 bows a little on the stock rim but will totally transform the car. They stick way better than the PS2s on my '16 Z06 which are much bigger.
If you can find an 11" rim that has the stock offset to the outside it will work perfectly. The rim is widened to the inboard side only. There is plenty of room. I can't remember the offset numbers off the top of my head.
Nitto NT01 in 315-30-20 bows a little on the stock rim but will totally transform the car. They stick way better than the PS2s on my '16 Z06 which are much bigger.
If you can find an 11" rim that has the stock offset to the outside it will work perfectly. The rim is widened to the inboard side only. There is plenty of room. I can't remember the offset numbers off the top of my head.
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Pro
Joined: Oct 2014
Posts: 737
Likes: 15
From: oklahoma/arkansas
I have been running 315's on 18x11 offset 78, and 18x11 offset 79 with NO rubbing at all, I agree with your 80 offset number for 315's. What im trying to find out is there enough room in the rear of a z51 for a 19x11.5 wheel offset 85 ? With a 325 tire. At what offset do I run out of room? I know a 95 offset with a 345 is not fitting in wheel wells, what is the offset limit? As much as I want to run a 325/30/19 Hoosier back there, I don't want to spend two grand on rear wheels with any chance they will not fit/work. Thanks
P.s also is your car lowered at all or stock height
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Here is same wheel without spacer on my new mag-ride car, my thoughts were to try a 335/30/18 back there but it's not worth the chance of damage, it does not take much to break off rear inner fender lips( they don't grow back)
Drifting
Joined: Sep 2013
Posts: 1,906
Likes: 51
From: Tampa Florida
I am running a 315/30-20 toyo 888 on my car with no rubbing issues at all.
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa