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Old 01-07-2019, 01:44 PM
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vetteOnTheRun
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Default 305 35 19 On Base

I know a lot of guys have put this tire on the 10" base wheel. My question is has anyone done this and has regretted doing this? Going from the 285 35 19 to the 305 30 19. Any regrets? Im looking to get some new tires and have been looking at doing this. Please only those who have done this upgrade. No speculation. Yes I know the 295 is the largest recommended size. Im looking for people who have done it and had problems like tire bulging, and tire roll in the corners and etc. <If this really happens. Thanks
Old 01-07-2019, 02:40 PM
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buckmeister2
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Originally Posted by vetteOnTheRun
I know a lot of guys have put this tire on the 10" base wheel. My question is has anyone done this and has regretted doing this? Going from the 285 35 19 to the 305 30 19. Any regrets? Im looking to get some new tires and have been looking at doing this. Please only those who have done this upgrade. No speculation. Yes I know the 295 is the largest recommended size. Im looking for people who have done it and had problems like tire bulging, and tire roll in the corners and etc. <If this really happens. Thanks
I am going to violate your conditions because I don't think you will get many answers from people who have done it, and I don't know your level of knowledge regarding tires/wheels.
The minimum wheel width REQUIRED for that tire is 10.5". Will there be bulging and rollover...absolutely. Will you be able to find a shop who will mount those on a 10" rim? I doubt it.

If you already knew the wheel requirements , and the likely results, I apologize for responding.

Old 01-07-2019, 03:26 PM
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Mike's LS3
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The difference is that the "35" profile series tire will work on a 10" rim, but the "30" profile tire recommends 10.5" rim. Simply, because the "30" tire has a wider tread width and narrower rim will roll the tire shoulder up. Some have done it, but not recommended.

I went the recommended route and have 305/30/19 on 10.5" rims. I remember reading a post where the 30" profile on a 10" rim made the car feel squirrely at higher speeds.
Personally, I never went that route.

Last edited by Mike's LS3; 01-07-2019 at 03:31 PM.
Old 01-07-2019, 03:31 PM
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vetteOnTheRun
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Originally Posted by buckmeister2
I am going to violate your conditions because I don't think you will get many answers from people who have done it, and I don't know your level of knowledge regarding tires/wheels.
The minimum wheel width REQUIRED for that tire is 10.5". Will there be bulging and rollover...absolutely. Will you be able to find a shop who will mount those on a 10" rim? I doubt it.

If you already knew the wheel requirements , and the likely results, I apologize for responding.
Thanks for the polite response buck. I don't disagree with with what you are saying at all. I found that same info. However in some older posts I found that many have done this. But no one clear on if they had any issues. That's what I'm trying to find out. If no one responds then I will be lead to believe there are issues and no one who has done it wants to respond. I hope i'm wrong.
Old 01-07-2019, 03:32 PM
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vetteOnTheRun
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Originally Posted by Mike's LS3
The difference is that the "35" profile series tire will work on a 10" rim, but the "30" profile tire recommends 10.5" rim. Simply, because the "30" tire has a wider tread width and narrower rim will roll the tire shoulder up. Some have done it, but not recommended.

I went the recommended route and have 305/30/19 on 10.5" rims. I remember reading a post where the 30" profile on a 10" rim made the car feel squirrely at higher speeds.
Personally, I never went that route.
Thanks Mike. So a 35 series is "safe"?

Last edited by vetteOnTheRun; 01-07-2019 at 03:43 PM. Reason: Just a quick note to add.
Old 01-07-2019, 05:28 PM
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demon340
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I have 305/30/19 on my base, no bulging, tracked the car with no ill effects, no squirrels, looks nice !!
Old 01-07-2019, 05:42 PM
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RickCC6
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Demon, what is the front tire size?
Old 01-07-2019, 05:51 PM
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demon340
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265/35/18 I think, which does have a slight bulge on the 8.5" rim. So I would go 255 front if you plan on keeping stock rims
Old 01-07-2019, 06:41 PM
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Originally Posted by demon340
265/35/18 I think, which does have a slight bulge on the 8.5" rim. So I would go 255 front if you plan on keeping stock rims
Thanks Demon. I was going to ask what tire that is, but they appear to be Nitto's correct? The reason I ask cause some manufactures tires are made different. Example a Nitto 305 30 19 maybe be different then a Pirelli 305 30 19 might be slightly larger or smaller. With that being said if you are tracking it with no issues I would say that the Nittos are GTG. Thanks
Old 01-07-2019, 06:46 PM
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Originally Posted by vetteOnTheRun
Thanks Demon. I was going to ask what tire that is, but they appear to be Nitto's correct? The reason I ask cause some manufactures tires are made different. Example a Nitto 305 30 19 maybe be different then a Pirelli 305 30 19 might be slightly larger or smaller. With that being said if you are tracking it with no issues I would say that the Nittos are GTG. Thanks
Correct Nittos run about 10mm smaller than most brands
Old 01-07-2019, 07:01 PM
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Right nitto invo
Old 01-07-2019, 07:21 PM
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Have the 305-35-19 Nitto NT05R drag radials on my extra set of wheels. Look and drive just fine. Even got them mounted at the **** Discount Tire without an issue.
Old 01-07-2019, 08:56 PM
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Mike's LS3
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Originally Posted by vetteOnTheRun
Thanks Mike. So a 35 series is "safe"?
As long as the tire manufacture recommends it. Michelin Super Sports and Pirelli P Zero are within recommended range using a 305/35/19 on a 10" rim.

Last edited by Mike's LS3; 01-08-2019 at 08:42 PM.
Old 01-07-2019, 11:03 PM
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Guyzer7
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This is a 305/30/19 on a 19x10 SR1 Bullet rim(WestCoastCorvette). It required a 5mm spacer to clear my brake caliper covers and slightly rubs when suspension compresses. Tires are Hankook Envo. I do not track the car.

Last edited by Guyzer7; 01-07-2019 at 11:06 PM. Reason: typo
Old 01-08-2019, 06:32 AM
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Thanks for all the replies everyone. From what I see there are a "couple" 305/30/19's that have been proven to be "ok" like nittos and hankooks. The same with 305/35/19 but less selection. I might take a chance with the Nittos 305/30/19 when I get my car back.
Old 01-08-2019, 06:58 PM
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I have run MT 305/35 x19 drag radial for years with no issues on stock 10" rim.they are not made for canyon carving or high speed cornering though.The 10" stock rim is one of the size's recommended by MT for this tire

Last edited by irok; 01-09-2019 at 06:59 AM.
Old 01-08-2019, 09:12 PM
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nbhansfo
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You really didn't write out your goal of going to 305s? Has it been done, yes. Has it been proven to be completely safe and recommended, no, not completely. Can you do it, sure. If you are running stock C6 19x10 and need a bit more bite I usually go with something like this https://www.tirerack.com/tires/tires...omCompare1=yes ... 295/30ZR-19. A bit more rubber and highly rated. And they are actually within manufacture spec for the suspension and rim sizes on the C6. With these you can do a bit of sport tracking or road fun and know it's completely safe without the possibility having any fitment issues or other issues down the road when "having fun". If you want to have a little better stance and line up the rims/tires with fender, do a safe vendor recommended spacer like 3/8" and do it right with the upgraded 3.25" Wheel Hub Studs. If you want 305s or larger because you really want some traction, well look into upgrading rims first.

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Old 01-09-2019, 06:41 AM
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Originally Posted by nbhansfo
You really didn't write out your goal of going to 305s? Has it been done, yes. Has it been proven to be completely safe and recommended, no, not completely. Can you do it, sure. If you are running stock C6 19x10 and need a bit more bite I usually go with something like this https://www.tirerack.com/tires/tires...omCompare1=yes ... 295/30ZR-19. A bit more rubber and highly rated. And they are actually within manufacture spec for the suspension and rim sizes on the C6. With these you can do a bit of sport tracking or road fun and know it's completely safe without the possibility having any fitment issues or other issues down the road when "having fun". If you want to have a little better stance and line up the rims/tires with fender, do a safe vendor recommended spacer like 3/8" and do it right with the upgraded 3.25" Wheel Hub Studs. If you want 305s or larger because you really want some traction, well look into upgrading rims first.
Thank you for your response. My goal: widest tire safely on my C7 z06 wheels with C6 base specs (same c6 base offsets). My car is a 2008 base. Again I "agree" the 295 is the largest recommended tire, however the 305 Nitto, and Hankook have been proven to be safe because they run a little smaller in size and the price is not much different. I don't road course. I might take her down the drag strip a couple times, but that is it. With that being said I will likely go with either the Nitto of the Hankook 305. However if someone who has mounted either one of these tires on a base and had issues I will definitely take their advice. But to my knowledge no one has. If you have found something or someone who has problems , please post it. Thanks
Old 01-09-2019, 02:34 PM
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theandrewo
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I just did this. I have a base '08 with stock 18/19 wheel size. I went from 295s to 305/30s on the back about 3 weeks ago. (I think I have 255s in the front). I am now getting traction control issues pretty frequently. This has been remedied by turning TC off, for now. The tires definitely bulge over the rims. Slightly, but I notice it. I haven't had a chance to do any canyon runs with them, as it's been wet here lately, but with the bulge, the tires roll over a little bit and I'm not entirely sure my contact patch will reach the entire width of the tire. I went to 305s for better traction.

If I did it again, I'd go back to 295s. The traction control issues are annoying. Can't speak to corner performance yet.
Old 01-09-2019, 03:23 PM
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nbhansfo
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Originally Posted by theandrewo
I just did this. I have a base '08 with stock 18/19 wheel size. I went from 295s to 305/30s on the back about 3 weeks ago. (I think I have 255s in the front). I am now getting traction control issues pretty frequently. This has been remedied by turning TC off, for now. The tires definitely bulge over the rims. Slightly, but I notice it. I haven't had a chance to do any canyon runs with them, as it's been wet here lately, but with the bulge, the tires roll over a little bit and I'm not entirely sure my contact patch will reach the entire width of the tire. I went to 305s for better traction.

If I did it again, I'd go back to 295s. The traction control issues are annoying. Can't speak to corner performance yet.
Yeah, this is what most don't really talk about much. A lot are perfectly okay just bypassing the system because it "works". The point is there aren't much difference between the 295s and 305s, so why take the chance of something not working correctly at the exact time you need it to work correctly when 295s are already upgrades. I've had this discussion countless times I feel like at one of the many local car shows. A lot don't realize the amount of electronic control and precision that goes into the systems now. Not like some old 454 block throwing down rubber with no TCS or other stability control modules.

Last edited by nbhansfo; 01-09-2019 at 03:25 PM.


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