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Discussion Starter · #1 ·
Hey guys
Just got done redoing the front end of my car and need new tires-
Looks like many of the brands have eliminated recurrent rears
Wondering if any of you guys could help me out w your ideas
I know someone has “been there done that”

2” dropped spindles + Running 17” rims
Currently
Front 235/45/17 BFG
Rear 255/50/17 BFG (the discontinued size)

used tire calculator and don’t know if dropping front/rear to diff size would drop car down too much to look out of place or eliminate the “rake” on the car
Appreciate hearing what you 17” guys running
Thanks in advance
Andy
Wheel Car Tire Vehicle Hood
 

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Do you know how to calculate the overall diameter knowing the tire size and aspect ratio?

It's tire width x aspect ratio x 2 / 25.4 + wheel diameter.

So for your current rear tire, 255 x .50 x 2 /25.4 + 17 = 255x.50x2/25.4 + 17 = 27.04"

So you need to be looking at getting a 27" tire to replace your 255/50/17.
 

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Discussion Starter · #3 ·
Appreciate response Rick
Saw and calculated via tire size chart…with the 255/50/17 going away am really after what other guys are running for a 17” rim set up (frt/rear combo)
 

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Wheel Tire Car Vehicle Window

Not sure if this helps you or not as I have C4 Corvette suspension on mine but the wheels are 17". The front tires are 255/40/17 and the rear tires are 285/40/17 which just fit in the stock rear wheel wells. You would likely need to have the springs moved inboard on a stock rear set up.
Have you considered a different tire brand than the BFG? I just looked on discount tire and they have both your sizes in a Nitto tire. Nitto 555 is what I have had on mine for several years and they are a pretty good tire.
 

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I'm sure you can find those tire sizes with a different mfg. I'd look at a set of Bridgestones. I picked up a set of Bridgestone S007's on clearance from Tirerack this past Spring in 255/40/18 for the front and 265/45/18 in the rear (I wanted to reduce my effective gear ratio from 3.73 a bit).

The sizes you're looking for are pretty common and I wouldn't wed myself to BFG's. Nothing wrong with them, but if they don't have the size you need, there are plenty of other great choices.
 

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Take a look at Nitto they still show a 255/50/17 in the 555G series when I first put my 56 together I ran a 225/45/17 on front & 255/45/18 on the rear. I didn't like the look of the low profile on the front & later changed to a 225/50/17 front & the rear got swapped after a pocket kit install to 305/45/17 Mickey Thompson's for traction.
 

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Discussion Starter · #7 ·
Take a look at Nitto they still show a 255/50/17 in the 555G series when I first put my 56 together I ran a 225/45/17 on front & 255/45/18 on the rear. I didn't like the look of the low profile on the front & later changed to a 225/50/17 front & the rear got swapped after a pocket kit install to 305/45/17 Mickey Thompson's for traction.
Just what I was looking for
Thanks for advice..so in the pic of your 56 you’re running 225/50.305/45
Looks like has really nice low stance
 

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If you go to TireRack.com... pick your tires/sizes/etc... and for any of their tires, click on 'specifications' and it will show you all the various dimensions for that tire...
In your original sizes, RIKEN Raptor ZR A/S are available for $387.12 shipped to you from Tire Rack.

235/45ZR17
97W RF
1,609 lbs​
50 psi​
10/32"​
27 lbs​
7.5-9"​
8"​
9.3"​
8"​
25.4"​
ID
255/50ZR17
101W SL
1,819 lbs​
51 psi​
10.5/32"​
32 lbs​
7-9"​
8"​
10.4"​
9"​
27.1"​
ID
 

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Just what I was looking for
Thanks for advice..so in the pic of your 56 you’re running 225/50.305/45
Looks like has really nice low stance
In the avatar photo it had the Nitto 255/45/18 on the rear before installing the pocket kit & different rear springs attached photos are 305/45/17 but the different rear springs.That forced me to add a 1.5" lowering block to get close to the same rear height which I wasn't happy with & so far the rears haven't sagged any or very little to date so I can remove the blocks. The front 2" lowering springs are starting to sag after 4+ years & that's ok for now.
 

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There is also a app that you can enter two different tire sizes for comparison shows the height of the side wall + all other dimensions.
 

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Discussion Starter · #12 ·
Thanks
Have played with them BUT doesn’t show it on a car now does it …hahaha
Trying to see what other guys are running on their lowered cars. some things just don’t know until on car
Gap between lower fender and rim
Front spacing
Rear wheel ride
Scraping..stuff like that
 

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On the front end the disc brake package you have dictates a lot to tire & rim size Many of the packages use chevelle rotors which will set the wheels out toward the fenders as much as 1.5" on each side.
 

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Discussion Starter · #15 ·
Thanks guys
Back from Vacation- appreciate all of the input and DMs of pics & tire sizes they’re running on their cars!
Gonna stick with same size for this round able to buy the Nitto sizes and will update on how everything comes together-
Was in Nashville and saw some cool Tri-5s at Cars&Coffee in Franklin w my buddy!
Everyone going to the Nationals have fun.
Andy
 
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