Anyone have issues with 305/30/19 tires on stock 10" wide rims?
02-15-2012, 06:10 PM
#21
Le Mans Master
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Correct rim size is necessary fro the sidewall to flex in the way that it was designed.
If the rim is wider or narrower than the recommended range, the tire sidewall will flex at a point that is either too close to the rim or too close to the tread and in either case at a point not designed for flex. Under hard use, such as autocross, the tire will not perform as it was designed and your elapsed times will suck, and the tire could even fail
If the rim is wider or narrower than the recommended range, the tire sidewall will flex at a point that is either too close to the rim or too close to the tread and in either case at a point not designed for flex. Under hard use, such as autocross, the tire will not perform as it was designed and your elapsed times will suck, and the tire could even fail
but bottom line too is, you dont gain a larger contact patch, the tire is mushroomed...... and this also effects the action of the tread blocks.
02-16-2012, 03:31 PM
#23
Burning Brakes
Well, if my high school geometry is still valid, the circumference of the rear tire is reduced by 4.78%, making it spin that much faster, along with the speedo.
Anyone? Anyone?... (Ben Stein as the boring econ teacher in Ferris Bueller's Day Off)
Anyone? Anyone?... (Ben Stein as the boring econ teacher in Ferris Bueller's Day Off)
02-16-2012, 07:18 PM
#24
Melting Slicks
on other vettes i've owned , reducing tire diameter, put the car lower, scrapped more going out of my driveway
i'd hit the rev limiter sooner, but didn't seem to make any difference in the TC or AH as long as the stagger was 1-1.2",also , there seemed to be less sidewall flex which i think caused the car to corner less than a stock tire of equal tread design or pattern..and the ride was rougher..just my 2 cents.
on my 04 c5z i had 19 fts and 20 rears (305 invos)...there was a huge trade off over stock
i used 335 nt05's on the rear of my 06 Z.that made a huge imporvement in traction over RF's
with my current c6-i am considering a softer non runflat in the stock sizes on my next tire purchase, so am interested in the value of going to the 265-305's, but again, i do think there is some trade off's in going with those sizes..so i am interested in more pics..and opinions of these sizes vs a non RF stock tires sizes
great thread..
i'd hit the rev limiter sooner, but didn't seem to make any difference in the TC or AH as long as the stagger was 1-1.2",also , there seemed to be less sidewall flex which i think caused the car to corner less than a stock tire of equal tread design or pattern..and the ride was rougher..just my 2 cents.on my 04 c5z i had 19 fts and 20 rears (305 invos)...there was a huge trade off over stock
i used 335 nt05's on the rear of my 06 Z.that made a huge imporvement in traction over RF's
with my current c6-i am considering a softer non runflat in the stock sizes on my next tire purchase, so am interested in the value of going to the 265-305's, but again, i do think there is some trade off's in going with those sizes..so i am interested in more pics..and opinions of these sizes vs a non RF stock tires sizes
great thread..
Last edited by bud miller; 02-16-2012 at 07:21 PM.
02-24-2012, 10:47 PM
#26
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Correct rim size is necessary fro the sidewall to flex in the way that it was designed.
If the rim is wider or narrower than the recommended range, the tire sidewall will flex at a point that is either too close to the rim or too close to the tread and in either case at a point not designed for flex. Under hard use, such as autocross, the tire will not perform as it was designed and your elapsed times will suck, and the tire could even fail
If the rim is wider or narrower than the recommended range, the tire sidewall will flex at a point that is either too close to the rim or too close to the tread and in either case at a point not designed for flex. Under hard use, such as autocross, the tire will not perform as it was designed and your elapsed times will suck, and the tire could even fail
02-24-2012, 11:18 PM
#27
Melting Slicks
bud
Last edited by bud miller; 02-24-2012 at 11:36 PM.
02-24-2012, 11:22 PM
#28
Pro
I'm not saying this won't work via experience, just from what I've read on the forum. I'm going through the same decision making process and have considered that exact same setup. I've decided to buy new wheels and go with 255/35/18 and 305/35/18 because my use is specifically for HPDE, not the street. I just haven't pulled the trigger yet...
02-24-2012, 11:26 PM
#29
Melting Slicks
in michelins super sports, the stagger is 1.1..i don't know about other makes of tires...they do vary , i know that much..
255/40 are 26 "
295/35 are 27.1"
255/40 are 26 "
295/35 are 27.1"
02-25-2012, 09:55 AM
#30
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Is that on the stock 8.5" wide fronts and 10" rears. Do you have any feedback on how the do in autoX or HPDE?
03-08-2012, 05:03 AM
#31
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There was another post today about the same subject: "305 35 19 on stock c6"
St.Char/v26278 - Sounds like this isn’t the way to go if you're tracking? Any recommended tire setup for stock wheel sizes?
My post from the other thread about my situation:
Seems like everyone is in agreement that the 305/30/19 tire isn’t an issue for the rear even though it’s over the manufactures recommendation minimum wheel width (stock =10”, min recommended=10.5”). I’m curious to know if there are adverse side effects of putting a tire that’s too big for the wheel? I’m looking at getting a set of dedicated track wheels/tires. Wouldn’t handling be affected by having a tire too wide for the wheel? I would understand that for street driving or maybe even drag (I have no experience there) that it wouldn’t make a big difference. Curious to know if anyone is doing aggressive track events with this setup where handling is crucial (I’ve always run stock sizes)?
I’m looking at the Toyo R888 and DarkSide’s recommended setup of 265/35/18 (25.4” dia) and 305/30/19 (26.5” dia) are both ½” larger than the stock wheel requirements but perfectly fit the recommended stagger of 1.1”
The largest tire size you can go and stay within wheel specs is 255/35/18 (25.1” dia) and 295/30/19 (26” dia) but the stagger is dropped to 0.9”. According to Taken19, that will cause problems.
To be honest, I wouldn’t mind staying with stock sizes to avoid issues but the Nittos and R888s don’t come in stock sizes. Perhaps I should just stay with stock sizes and get RE-11s?
I have seen many posts where members get widened front wheels and widened rear 18” wheels for track setups. I have to admit, I’m skeptical about widening wheels but it seems like everyone does it with no problems. I have also read that the CCWs are the best bet but am hoping to not spend that much on a set of track wheels and am curious if there are any good setups for stock wheels.
Any insight would be very appreciated!
St.Char/v26278 - Sounds like this isn’t the way to go if you're tracking? Any recommended tire setup for stock wheel sizes?
My post from the other thread about my situation:
Seems like everyone is in agreement that the 305/30/19 tire isn’t an issue for the rear even though it’s over the manufactures recommendation minimum wheel width (stock =10”, min recommended=10.5”). I’m curious to know if there are adverse side effects of putting a tire that’s too big for the wheel? I’m looking at getting a set of dedicated track wheels/tires. Wouldn’t handling be affected by having a tire too wide for the wheel? I would understand that for street driving or maybe even drag (I have no experience there) that it wouldn’t make a big difference. Curious to know if anyone is doing aggressive track events with this setup where handling is crucial (I’ve always run stock sizes)?
I’m looking at the Toyo R888 and DarkSide’s recommended setup of 265/35/18 (25.4” dia) and 305/30/19 (26.5” dia) are both ½” larger than the stock wheel requirements but perfectly fit the recommended stagger of 1.1”
The largest tire size you can go and stay within wheel specs is 255/35/18 (25.1” dia) and 295/30/19 (26” dia) but the stagger is dropped to 0.9”. According to Taken19, that will cause problems.
To be honest, I wouldn’t mind staying with stock sizes to avoid issues but the Nittos and R888s don’t come in stock sizes. Perhaps I should just stay with stock sizes and get RE-11s?
I have seen many posts where members get widened front wheels and widened rear 18” wheels for track setups. I have to admit, I’m skeptical about widening wheels but it seems like everyone does it with no problems. I have also read that the CCWs are the best bet but am hoping to not spend that much on a set of track wheels and am curious if there are any good setups for stock wheels.
Any insight would be very appreciated!
03-08-2012, 10:37 AM
#32
Melting Slicks
http://www.zip-corvette.com
bud
03-08-2012, 12:33 PM
#33
Melting Slicks
03-08-2012, 02:14 PM
#34
Le Mans Master
03-08-2012, 10:41 PM
#36
Melting Slicks
03-08-2012, 10:58 PM
#37
Melting Slicks
If you look at the Tire Rack survey ratings you'll find that Super Sport rates better than the PS2 in almost every category. In fact, it's the highest rated (based on survey results) summer tire they sell.
03-12-2012, 02:12 AM
#38
Le Mans Master
04-14-2014, 03:39 AM
#39
1st Gear
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305 30 19 tire on stock 10x19 C6 Rim. (yes)
I'm ready to pull the trigger on new tires for my stock rims on my '08. I had made up mind on the tires and then realized that my rear rims are 10" wide. I was thinking they were 10.5" wide. I'm now waffling back and forth between Michelin Pilot Super Sports and Bridgestone RE-11. Both tire manufacturers recommend a 10.5" minimum rim width for the 305/30/19 tires.
Has anyone running 305/30/19 tires on the stock 19" X 10" rims had any issues?
Has anyone running 305/30/19 tires on the stock 19" X 10" rims had any issues?
Last edited by Lorenz702; 04-14-2014 at 03:50 AM.
04-14-2014, 06:34 AM
#40
I've got an 09 vert. I put Michelin Pilot Super Sports. 305 on rear and 265 on front. Stock rims. I did it for the bigger tire look. If I had to do over I would have bought next size down.When I push the car in a corner if feel the tire squirm on the rim and it has changed the way the suspension sets. I got them from Tire Rack and the salesperson said if I track or autocross,don't get that size. I run 35 lbs air pressure,up from 30 that ran originally and that has helped some.