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Discussion Starter #1
I am looking at going to the 17" mixed front and rear tires. I am wanting a driver mainly. I am more interested in the quality of ride (comfort & low noise) over performance handling.
With the experience of the guys that have made the change, what tire gives you the best ride with less noise?
(After earlier posts from the forum, I have done the following)
Car has Hotchkis frames connectors, Speedtech front U/A, Hotchikis 1 1/8 bar, new bushings on suspension and subframe. new stock springs and std shocks, new Steering gear from ATS.
Have not yet got it to an alignment shop, but looks like it may not need the G-mod to get the neg camber.....will check that out later.

Thanks for all the help,
 

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Decide what size tires and wheels you want to go to and then go to www.tirerack.com and do a tire search by size. Then read the survey results and see what consumers have to say about the ride quality and noise level of the tires your considering. Keep in mind this information is subjective though. This should help you pick out something that you will be happy with. Something else to consider when picking out sizes is the taller the sidewall the better the ride quality should be. For example a 50s series tire should ride better than a 40s series tire just because the sidewall is taller. Good luck with what ever you choose.
 

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I'm running Goodyear Eagle HP 245/45/17 front and 255/45/17 rear and the ride quality is BETTER than the cheap 15" tires I had before.

I'd get 235 fronts instead of the 245s next time - the 245s slightly rub.

Now, the Goodyear Eagle HP traction really stinks and I'll choose something else next time, but they didn't cost too much. But they ride nice!
 

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17's are probably the max I would go in wheel size because your tire profile starts getting pretty low and you really start to feel the bumps in the road more. I put 16x8 V45's with 245/50/16 and 255/50/16 tires on my old 68 and it was a great combination. The ride was comfortable and the handling was a lot better than the old 15's that were on it. The tire selection gets a lot better once you get to 16" wheels so you should be fine with either 16 or 17. Cost was really the factor for me. 16" wheels are less expensive and the same with the tires.
 

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Discussion Starter #6
Thanks, for the quick response.
Dennis I really like your white wonder's appearance with the 17" wheels. What wheel are you using?
I am trying to stay with the rallye wheel look on the 17s since it is a pace car; I have not found the wheels yet. I am looking at the Vintique steel rallye wheel. (still will keep my original 15" wheels if ever needed)
I also have noticed the price difference on the 17" compared to the 16"; is it worth the difference to go to the 17" ? $ is not a real factor, if it's worth it.
 

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Thanks, for the quick response.
Dennis I really like your white wonder's appearance with the 17" wheels. What wheel are you using?
I am trying to stay with the rallye wheel look on the 17s since it is a pace car; I have not found the wheels yet. I am looking at the Vintique steel rallye wheel. (still will keep my original 15" wheels if ever needed)
I also have noticed the price difference on the 17" compared to the 16"; is it worth the difference to go to the 17" ? $ is not a real factor, if it's worth it.
Thanks, the wheels are Budnik Anvil5's...

For 17" rallys PM Skip (sketter55), he has billet rallys on his '69 and can point you to where he got them. I would stay away from a 17" steel wheel if you want ride quality, it will be too rigid. Good billet wheels are much less rigid or stiff and you can run lower profile tires. The old mind set that less sidewall means harsher ride doesn't really apply if the wheel is quality and intended for low profile tires. As I said my 17" wheels and tires provide a better ride than the 15" rallys and 60 series tires I use to run. Check out any modern luxury car and you'll see big wheels and short sidewalls. Never would have happened if they didn't stand up to the bumps in the road or made the ride worse.

Check the stampings on your 15" rallys, you might be able to make some Z/28 owners day depending on what you have. Your pace car came with 14" wheels from the factory...
 

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I am running 17 inch all the way around on my Z with Hotchkis leafs , springs and sway bars. Have koni shocks and speed tech upper and lower control arms. Global West two piece bushings . I find the ride to be very comfortable .



 

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I am running 17 inch all the way around on my Z with Hotchkis leafs , springs and sway bars. Have koni shocks and speed tech upper and lower control arms. Global West two piece bushings . I find the ride to be very comfortable .
What rims are those?

Also what tire size are you running?

Thanks
 

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Just wondering.... You guys on this forum seem to have twice the knowledge as I have found on any firebird forums I have found. Do these tire sizes work for Firebirds as well. I would guess both first gen cars would be the same but not sure.
 

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Just wondering.... You guys on this forum seem to have twice the knowledge as I have found on any firebird forums I have found. Do these tire sizes work for Firebirds as well. I would guess both first gen cars would be the same but not sure.
Backspacing on the wheels would have to be adjusted for a firebird since the rear ends are an 1" wider, fronts would be different as well due to hubs (drum cars at least) that push the tires out about .500" farther than a camaro hub.
 

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Backspacing on the wheels would have to be adjusted for a firebird since the rear ends are an 1" wider, fronts would be different as well due to hubs (drum cars at least) that push the tires out about .500" farther than a camaro hub.
Len can you provide more on the 1st gen firebird rears being longer? This is the first I have ever heard and when I had a '67 12 bolt with the torsion rod brackets on both sides the thought was it was either added (the weld told the story) or was a firebird rear and nobody ever questioned the axle width...
 

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The only side by side comparison I ever did was between the 1967 firebird 10bolt and a 1968 camaro 12bolt, the firebird rear was 1" wider, I don't recall the actual dimension but I think it was 60" or 60.5" wms for the firebird rear (my CRS is kicking in...)
Just rechecked this, the firebird 10bolt was 61".
 
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