Wheels & Tires Grabbing the road and stopping.

Anyone have spacers with OEM 19s and upsized tires ( 275/35/19 & 245/35/19)

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Old Sep 4, 2007 | 12:27 AM
  #16  
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Originally Posted by humancapital
my friend has been running 275/35's on the rear of his z on 19x8.5 volks for over two years and a few autocrosses, no tire explosions there

275's prob arent needed, but they will work.
its not safe at all hes just lucky!!!
 
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Old Sep 4, 2007 | 12:42 AM
  #17  
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is it different for 19's or something?

i have ran 265 hoosiers on a 17x7.5" wheel before and had no problems, evo guys run 275's on their stock wheels which are 17x8's.
 
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Old Sep 4, 2007 | 04:03 AM
  #18  
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Originally Posted by humancapital
is it different for 19's or something?

i have ran 265 hoosiers on a 17x7.5" wheel before and had no problems, evo guys run 275's on their stock wheels which are 17x8's.
just because it fits on the wheel doesn't mean its safe or even better for performance. You list 2-3 examples to justify that its "safe" to do so, but had infiniti put 275's on all 8.5" wheels from the factory, I'm sure the number of failures would be significant. Basically you are increasing the risk of a failure by running the tires on wheels outside of the manufacturer's specs. Running such wide tires on narrow wheels can actually hurt performance also by causing the sidewalls to roll over during aggressive cornering. Race tires are an exception due to the sidewalls being much stiffer than street tires. Until you can cite a study of 10,000+ tires being run on narrow wheels, you have no place telling others its safe to do.
 
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Old Sep 4, 2007 | 03:13 PM
  #19  
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I've been running 265/35/19's for 20,000 miles w/ 15mm spacers on stock 19's with perfectly even wear. This size fits perfectly! The sidewalls have no bulge whatsoever. IMO and ACTUAL REAL WORLD EXPERIENCE much better and safer than the 245's.

Ignore the doomsayers, pontificators, and "forum experts". FIND SOMEBODY WHO ACTUALLY IS RUNNING THE SETUP YOU HAVE QUESTIONS ABOUT!

Oh yeah, please say a prayer for me. I am squeeeeezing on a set of 275/35/19 later this week. Then I will smoke a cigarette, eat red meat, go tanning, and stay up real late writing my obit (maybe I just have...that would be irony at its finest.)
 
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Old Sep 4, 2007 | 03:54 PM
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Originally Posted by ResIpsa
I've been running 265/35/19's for 20,000 miles w/ 15mm spacers on stock 19's with perfectly even wear. This size fits perfectly! The sidewalls have no bulge whatsoever. IMO and ACTUAL REAL WORLD EXPERIENCE much better and safer than the 245's.

Ignore the doomsayers, pontificators, and "forum experts". FIND SOMEBODY WHO ACTUALLY IS RUNNING THE SETUP YOU HAVE QUESTIONS ABOUT!

Oh yeah, please say a prayer for me. I am squeeeeezing on a set of 275/35/19 later this week. Then I will smoke a cigarette, eat red meat, go tanning, and stay up real late writing my obit (maybe I just have...that would be irony at its finest.)
You're a funny guy, a real funny guy 265s, though not recommended are OK, IMO, for an 8.5" wheel. Anything bigger is, again IMO, and in the industry's opinion, not a good or smart idea. So I guess you're funny, but not smart

Lou
 
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Old Sep 4, 2007 | 04:13 PM
  #21  
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Originally Posted by ResIpsa
I've been running 265/35/19's for 20,000 miles w/ 15mm spacers on stock 19's with perfectly even wear. This size fits perfectly! The sidewalls have no bulge whatsoever. IMO and ACTUAL REAL WORLD EXPERIENCE much better and safer than the 245's.

Ignore the doomsayers, pontificators, and "forum experts". FIND SOMEBODY WHO ACTUALLY IS RUNNING THE SETUP YOU HAVE QUESTIONS ABOUT!

Oh yeah, please say a prayer for me. I am squeeeeezing on a set of 275/35/19 later this week. Then I will smoke a cigarette, eat red meat, go tanning, and stay up real late writing my obit (maybe I just have...that would be irony at its finest.)
once again, 1 example with limited mileage, and you are making claims about it being safer than the stock setup, which has thousands of people running it with 100x+ the miles on it? Try a 305/25/19 next time!
 
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Old Sep 4, 2007 | 05:13 PM
  #22  
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Hey thought id quickly update my status. I now have on a set of 255/40/19 in the back and 225/35/19 in the front.. everything is running just fine ( as you would assume).

One thing i would like to mention is that when i first put on the 275/35/19 tires on my rears it definitely felt like something was wrong. At the time i just assumed it wasnt anything bad and i had to get used to the wider tires...but regardless it seemed "not right".. i would describe it as follows:

I drove from SD to the Bay area immediately after getting these put on and right when i left discount tires i started feeling this kinda of swagger while riding on the highway. Basically as i drove and changed lanes rather quickly i could almost feel the car shift back and forth with each change lane... wasnt a tight feeling as i was used to with the stock tires... it almost seemed as if the rear of the car was not stable...

After finding out that the tires i had on where too big it made more sense... basically if the tires are too wide then it gives the wheels room to "shimmy" back and forth. This HAS to be pretty bad for the sidewalls and unsafe in general. Having felt that already and people on this board pointing out the tire size problem..seemed like a no brainer to me.. I mean hell those tires were almost 300 a piece through discount ... the set i have now are well below 200 a piece
 
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Old Sep 5, 2007 | 09:41 AM
  #23  
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Originally Posted by malukalu
Hey thought id quickly update my status. I now have on a set of 255/40/19 in the back and 225/35/19 in the front.. everything is running just fine ( as you would assume).
225/35/19 on the front is not OK. Your front to back outer diameter difference is too extreme. The difference should be about 1", and your difference is close to 2". 225/40/19 or 245/35/19 would have been a better choice for the front with your 255/40/19 rears.

Lou
 
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Old Sep 5, 2007 | 11:24 AM
  #24  
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limited mileage, how about the use of the tires is what really matters. just because infiniti didnt put that size of tire on the car doesn't mean it wont fit. you obviously have limited experience with tires and how they work.

i worked at a tire shop for 2 years in college and have about 6 years of racing experience, so maybe you can tell me something i have missed about tires. or you can tell me where someone had a 275 tire blow up from being on a 8.5" wheel.
 
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Old Sep 5, 2007 | 11:39 AM
  #25  
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Originally Posted by humancapital
limited mileage, how about the use of the tires is what really matters. just because infiniti didnt put that size of tire on the car doesn't mean it wont fit. you obviously have limited experience with tires and how they work.

i worked at a tire shop for 2 years in college and have about 6 years of racing experience, so maybe you can tell me something i have missed about tires. or you can tell me where someone had a 275 tire blow up from being on a 8.5" wheel.
so are you telling me that your 2 years of tire shop experience outweighs the recommendations of ALL the tire manufacturers? Just the bulging sidewall is enough of a reason to not run a 275 on an 8.5. Its just asking for sidewall rollover that hurts performance and runs the risk of breaking a bead
 
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Old Sep 5, 2007 | 11:49 AM
  #26  
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just find me a person that broke the bead in that instance.
 
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Old Sep 5, 2007 | 12:40 PM
  #27  
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for the love of god someone close this thread....
 
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Old Sep 5, 2007 | 12:40 PM
  #28  
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for the love of god someone close this thread....
 
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Old Oct 26, 2007 | 03:14 PM
  #29  
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Let's get back to the original questions about spacer widths with stock 19" wheels.

Originally Posted by malukalu
Someone mentioned in another thread that if i run these tires i should use 10mm spacers ( assuming i want spacers in general of course). Someone else posted using 15mm and 20mm spacers with the stock 19s and stock tires but i want to make sure that since i got wider tires now i dont rub. Thanks in advanced
Sounds like either 15/20mm or 20/25mm (FR/RR) is recommended from my reading. Does anyone have pictures with these two setups? It seems like 20/25 will be too much. I am running 245/35-19 and 255/40-19 Falken FK-452's, which both fall under the tire manufacturer's reccomended spec, but not off topic to the spacers.
 
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Old Oct 27, 2007 | 03:21 AM
  #30  
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I don't want anyone to go against me, But have any of the people that don't recommended trying this size, tried it or experience it. Sorry I don't like people that haven't tried stuff, but can say stuff. Not be mean. Cause sometime when you go off what other people say, sometimes it might not be the right thing. Just wondering ???
 
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