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Suspension Some times the most over looked

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Old 07-10-19, 04:46AM   #1
AngryBird68
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Default Nitto 555R Extreme Drag Tires

Anybody using these? What's been your experience with them hooking at the track compared to MT?

I have wore out 2 pairs of MT DOT Drag Radials and thought I'd give the Nittos a try being that they cost 145 per tire instead of 225 per tire for the MTs.
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Old 07-10-19, 06:18PM   #2
Steve C
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I run the 275/60-15 NT555R drag radial as a street tire. For me they won't hook at the track for best performance on my previous 580 hp 462 combo and the current 650 hp 505 engine. But they will get more mileage than the other DOT drag radials based on claims. I recently bought a new set of them only because the were 10 years old ! That said, for the most part these two combinations were pump gas street cars and seldom raced. In previous years for racing when a slick was not allowed we used M/T ET Street 28x12.50-15LT


.
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Old 07-10-19, 07:16PM   #3
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friend has them on his grand national, they are junk compared to MT
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Old 07-10-19, 08:06PM   #4
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friend has them on his grand national, they are junk compared to MT
ugh
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Old 07-10-19, 09:16PM   #5
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Originally Posted by Steve C View Post
I run the 275/60-15 NT555R drag radial as a street tire. For me they won't hook at the track for best performance on my previous 580 hp 462 combo and the current 650 hp 505 engine. But they will get more mileage than the other DOT drag radials based on claims. I recently bought a new set of them only because the were 10 years old ! That said, for the most part these two combinations were pump gas street cars and seldom raced. In previous years for racing when a slick was not allowed we used M/T ET Street 28x12.50-15LT


.
Hi Steve .. i remember seeing your TransAm in an article/articles? Loved that car .. gorgeous.

OK ...now you got me thinking ...I have been driving around on BF Goodrich Radial TAs on my old Cragars ...just to have tires to drive on because i was eating up my 2cnd set of MT ET Street R tires and put them aside on another set of wheels to save what was left of them for the track.

So now maybe I will just put the Nittos on my Cragars and have them be my street tires ... then maybe Mazda Miata's and such wont beat me off the line when I'm driving around .. lol As the BF Goodslips are RIDICULOUS .. but my spool has yet to wear them out.

guess I'll buy another set of MTs for my track wheels
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Old 07-10-19, 09:34PM   #6
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You get what what you pay for. Had them they were terrible
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Old 07-10-19, 10:51PM   #7
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The Nitto NT555R is more street oriented and as already suggested the performance level is not as close to the two main competitors, BFGoodrich and Mickey Thompson, both have products that are known to be stickier and softer than the Nitto tire, although such attributes come at the expense of durability and streetability, of which the Nitto excels. Also the Nitto tread-depth and tread-pattern will be helpful if you're stuck driving in a downpour.
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Old 07-26-19, 01:45PM   #8
ta man
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You won't get a better hooking track radial then that et pro. What are you 60fting? What for traction aids? I plan to get a sub 1.5 60ft this year with just 3 way shocks and et pros.
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Old 08-12-19, 06:11PM   #9
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Default update - got to try the Nittos out this weekend

I'll start by saying this was a well prepped track as it was one of Jay Boddie's "No Excuses" events.

Got them mounted up Saturday morning and drove the car straight to the track.

I forgot my tire gauge and for the first pass I didn't really know where the tire pressure was besides what the the cheesey gauge in my cigarette lighter air compressor said at just below 20 pounds.

1st pass blew the tires off...went horrible lost to a Hellcat Challenger

After borrowing a proper tire gauge and discovering they were at 22 pounds I lowered them to 15 .. next 4 runs the car dead hooked with 1.55 60s

The pic is my 3rd run getting redemption on the Hellcat .. since it was a grudge style event there were no times displayed on the clocks and they cut the time slips in half lengthwise so you can't see what your competitor is running and thus can't tell you how fast the Hellcat was ...but he was way back there at the 1/8th .. this event was an 1/8th mile event (Sac Raceway runs 1/4 mile by default but this was a Boddie event.

So far I'm happy with the Nittos, but we will see how they do on a no prep track maybe on a Wednesday night race this week
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Old 08-12-19, 06:39PM   #10
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Very nice.

As we know weather and track prep will have it's effect. If you know or estimate, in similar conditions as that run with the Nittos how did it compare to your previous MT DOT Drag Radials ?


.
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Old 08-12-19, 06:44PM   #11
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Very nice.

As we know weather and track prep will have it's effect. If you know or estimate, in similar conditions as that run with the Nittos how did it compare to your previous MT DOT Drag Radials ?


.
Pretty close to the same 60s on similarly prepped track in similar weather... but did have a few outings with same track prep in more favorable weather that resulted in my current personal bests .with 1.48/1.49 60s
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Old 08-12-19, 07:27PM   #12
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With M/T ET streets and my previous 462 combo at San Antonio it ran 10.94 at 123.59 mph, 1.59 60-ft. A month later in Dallas it ran 11.06 at 123.77 mph, 1.61 60-ft. Two different tracks, different weather and elevation.

Same combination as above but a year later and with the Nitto's. For interest I drove to a local track 56 miles each way and lowered the air pressure to 18 lbs. and made one pass. It ran 11.02 at 122.28 mph (1.62 60-ft). I like them as a street tire.
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Old 08-13-19, 03:12AM   #13
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Quote:
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With M/T ET streets and my previous 462 combo at San Antonio it ran 10.94 at 123.59 mph, 1.59 60-ft. A month later in Dallas it ran 11.06 at 123.77 mph, 1.61 60-ft. Two different tracks, different weather and elevation.

Same combination as above but a year later and with the Nitto's. For interest I drove to a local track 56 miles each way and lowered the air pressure to 18 lbs. and made one pass. It ran 11.02 at 122.28 mph (1.62 60-ft). I like them as a street tire.
Do you still own the car?

If it is the car I'm thinking it is, I was definitely inspired by its street trim performance when I saw an article about it. At that time my car was in the midst of its 27 year long state of disassembly which finally ended in early 2015.

Just got into other things for a LONG while.
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Old 08-13-19, 03:23AM   #14
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You won't get a better hooking track radial then that et pro. What are you 60fting? What for traction aids? I plan to get a sub 1.5 60ft this year with just 3 way shocks and et pros.
Suspension is pretty much all Calvert.

Calvert split mono leafs, CalTrac bars, Calvert front and rear shocks, (fixed 90/10 fronts, 9 way single adjustable rears,) Moroso Super Trick front springs and Global West del-alum upper control arm bushings and rear leaf shackle bushings, low friction upper ball joints .. will add the same to lower a arms and ball-joints at some point.

Best 60 is 1.48 on the MT ET radials -

Happy with the Nittos so far
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Old 08-13-19, 08:42AM   #15
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I've owned my Trans Am for 31 years with various different set ups.

Set up with the times shared above:
http://www.pontiacstreetperformance....455sc2003.html

( Those times were with the 10-inch converter )

Current engine is a 505 with overdrive transmission. And currently with Holley direct port fuel injection.

Last edited by Steve C : 08-13-19 at 09:01AM.
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