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[Z06] Tire size on 19 inch rear

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Old 06-18-2014, 12:59 PM
  #21  
juggernautZ06
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I just ordered 305 30 19 and 275 35 18 S 04 Potenza
Old 06-18-2014, 03:22 PM
  #22  
racebum
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Originally Posted by C5LOU
That looks great! No rubbing, no issues with AH and they don't stick out of the fender openings, right? Thanks for posting! Looks like the rears are on backorder right now. :-(
i used 5mm spacers out back just to maintain the exact oe offset relation front to rear. tire height at 295 30 19 and 265 35 18 is identical to oem, revs per mile are the same

they will not rub even if you don't use the spacers and no they do not stick out past the fenders at all

really an ideal tire for those wheels in fit and performance

wait for new stock if they are on BO. they are typically produced monthly. the pss is SO far ahead of other tires it competes with like the s04 it's not even worth considering using anything else until you get into softer extreme street tires and are going for warm dry roads only
Old 06-23-2014, 09:55 PM
  #23  
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Curious about the spacers. OE wheel offsets are 54 front and 58 rear I believe. The TSW wheels are 50 front and 65 rear. How does adding 5 mm in the back help? Thanks, sorry if this is a dumb question.

Originally Posted by racebum
i used 5mm spacers out back just to maintain the exact oe offset relation front to rear. tire height at 295 30 19 and 265 35 18 is identical to oem, revs per mile are the same

they will not rub even if you don't use the spacers and no they do not stick out past the fenders at all

really an ideal tire for those wheels in fit and performance

wait for new stock if they are on BO. they are typically produced monthly. the pss is SO far ahead of other tires it competes with like the s04 it's not even worth considering using anything else until you get into softer extreme street tires and are going for warm dry roads only
Old 06-24-2014, 03:36 PM
  #24  
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Originally Posted by C5LOU
Curious about the spacers. OE wheel offsets are 54 front and 58 rear I believe. The TSW wheels are 50 front and 65 rear. How does adding 5 mm in the back help? Thanks, sorry if this is a dumb question.
Higher offset wheels sit further inboard; adding a 5mm spacer to a wheel with a 65mm offset brings it to an offset of 60mm.
Old 06-24-2014, 06:22 PM
  #25  
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Makes sense - thanks!

Originally Posted by rjwz28
Higher offset wheels sit further inboard; adding a 5mm spacer to a wheel with a 65mm offset brings it to an offset of 60mm.
Old 06-24-2014, 07:14 PM
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$40 each for 5mm spacers from a Forum vendor - wasn't expecting them to be that much, but I guess they need to be made well and a good fit!

Originally Posted by C5LOU
Makes sense - thanks!
Old 06-24-2014, 08:32 PM
  #27  
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Originally Posted by C5LOU
$40 each for 5mm spacers from a Forum vendor - wasn't expecting them to be that much, but I guess they need to be made well and a good fit!
FYI they're half that price or less on ebay. I bought a pair of 1/4" spacers a month ago for $32 total including shipping.
Old 06-24-2014, 09:04 PM
  #28  
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Thanks for the tip!

Originally Posted by troyguitar
FYI they're half that price or less on ebay. I bought a pair of 1/4" spacers a month ago for $32 total including shipping.
Old 06-24-2014, 10:45 PM
  #29  
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Originally Posted by C5LOU
$40 each for 5mm spacers from a Forum vendor - wasn't expecting them to be that much, but I guess they need to be made well and a good fit!
that's high, i paid 50 shipped if i remember right for a pair of billet aluminum ones from pfadt when they were in business just last year
Old 06-25-2014, 05:45 PM
  #30  
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Are these specific to our cars or are they a universal fit for the bolt pattern?

Originally Posted by racebum
that's high, i paid 50 shipped if i remember right for a pair of billet aluminum ones from pfadt when they were in business just last year
Old 06-25-2014, 07:16 PM
  #31  
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The bolt pattern and the hub size both matter, IIRC most corvette, camaro, and other GM 5x4.75" vehicles have the same hub size though.
Old 06-25-2014, 08:48 PM
  #32  
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Most go with :

Front
18x9.5, or 18x10 with 265/35/18, or 275/35/18
Rear
19x10.5 or 19x11 with 305/30/19.

Either of the above combinations will work very well.
Tried and true combinations for many years now.

There is also no reason that you cant go with a 19/19, or 18/18 setup either.
Many people "think" that its part of the required stagger built into the C5's.
Thats not true... As long as you size your "tires" correctly you will be good to go.

I have been running the following for 6.5 yrs now.
19x10 - 275/30/19
19x11 - 305/30/19


Originally Posted by Scooter70
I run the 305/30-19 on my car and the speedo isn't off by enough to notice or care.
On a C5 Z06 with a 305/30/19 your speedo will read 60mph when your actually doing 60.4.

Not enough to make a difference at all.

Toque
Old 07-03-2014, 06:58 AM
  #33  
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Originally Posted by racebum
i used 5mm spacers out back just to maintain the exact oe offset relation front to rear. tire height at 295 30 19 and 265 35 18 is identical to oem, revs per mile are the same

they will not rub even if you don't use the spacers and no they do not stick out past the fenders at all

really an ideal tire for those wheels in fit and performance

wait for new stock if they are on BO. they are typically produced monthly. the pss is SO far ahead of other tires it competes with like the s04 it's not even worth considering using anything else until you get into softer extreme street tires and are going for warm dry roads only
Do you know if these wheels will clear a bigger brake package? I'm thinking about larger rotors, at least on the back, to fill up some of the space with these larger wheels. Thanks.
Old 07-03-2014, 04:59 PM
  #34  
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Originally Posted by C5LOU
Do you know if these wheels will clear a bigger brake package? I'm thinking about larger rotors, at least on the back, to fill up some of the space with these larger wheels. Thanks.
Yes, they absolutely will

You can run C6Z06 brakes behind the TSW Nurburgrings, and many aftermarket 6-piston brakes have smaller calipers than the cast PBRs the C6Z came with

Yes, it's a C6, but TSW wheels are only available in one set of offsets for C5/C5Z/C6 base/C7 base applications anyway. Regardless, even if they had a C6 offset vs a C5, C6 wheels sit more inboard and offer less clearance for big brakes in the first place, so they will definitely fit, especially after you put on your spacer

http://forums.corvetteforum.com/c6-c...-12-coupe.html
Old 07-03-2014, 07:33 PM
  #35  
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Originally Posted by rjwz28
Yes, they absolutely will

You can run C6Z06 brakes behind the TSW Nurburgrings, and many aftermarket 6-piston brakes have smaller calipers than the cast PBRs the C6Z came with

Yes, it's a C6, but TSW wheels are only available in one set of offsets for C5/C5Z/C6 base/C7 base applications anyway. Regardless, even if they had a C6 offset vs a C5, C6 wheels sit more inboard and offer less clearance for big brakes in the first place, so they will definitely fit, especially after you put on your spacer

http://forums.corvetteforum.com/c6-c...-12-coupe.html
Perfect - thanks!
Old 07-03-2014, 08:08 PM
  #36  
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Originally Posted by C5LOU
Perfect - thanks!
No problem, just make sure that whatever you go with will fit in the same or smaller space as the C6Z06 brakes and you'll be golden
Old 07-03-2014, 09:26 PM
  #37  
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Wow, a full C6 Z06 brake package from GM Parts Houseis $2100! I guess I better start saving my pennies!

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Old 07-04-2014, 04:23 AM
  #38  
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Originally Posted by C5LOU
Wow, a full C6 Z06 brake package from GM Parts Houseis $2100! I guess I better start saving my pennies!
I'm planning to do the TCE Wilwood W6A/FNSL4 kit on C6Z rotors in my car if I keep it... but that's still about the same amount of cash. BBKs aren't cheap; those are the two least expensive four-wheel options that I would consider, too.
Old 07-20-2014, 12:04 PM
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Did you install longer studs with the spacers? DRM has the spacers and studs, but after researching the process to replace the studs it looks like more of a job than I'd be comfortable attempting. So, either I run without spacers, use the stock studs or find someone that can replace the studs for me.


Originally Posted by racebum
i used 5mm spacers out back just to maintain the exact oe offset relation front to rear. tire height at 295 30 19 and 265 35 18 is identical to oem, revs per mile are the same

they will not rub even if you don't use the spacers and no they do not stick out past the fenders at all

really an ideal tire for those wheels in fit and performance

wait for new stock if they are on BO. they are typically produced monthly. the pss is SO far ahead of other tires it competes with like the s04 it's not even worth considering using anything else until you get into softer extreme street tires and are going for warm dry roads only
Old 07-20-2014, 02:46 PM
  #40  
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you can use 5mm spacers on OE studs. you can not use 10mm spacers on OE studs


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