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08 GT500, 562 RWHP. The stock tires are useless in 1st and 2nd gear. I am thinking I will switch to Nitto 555R Drag radials,

305/40/18. I can get them locally and would not have to do mail order. Will they fit the stock rim? If not, what's the largest size that will fit and not look squished?? How are the Nitto's for hooking up??? How about in the rain????

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08 GT500, 562 RWHP. The stock tires are useless in 1st and 2nd gear. I am thinking I will switch to Nitto 555R Drag radials,

305/40/18. I can get them locally and would not have to do mail order. Will they fit the stock rim? If not, what's the largest size that will fit and not look squished?? How are the Nitto's for hooking up??? How about in the rain????

 

 

 

go with the NT05's they hook up better

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I ran-And still have the 305/35s but hadnt run them in a while.I found the 305/40s had better traction which I attribute to more sidewall in the 555r.From what I understand the NT05r has been really good in the stock size.And yes a 305 fits on stock wheels no problem.

 

Haven't heard anythinng about how the stock size NT05r hooks in comparison to a wider tire. Have you run the stock size of that tire? If so, how about some more details on how it performs on street and track.

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I ran-And still have the 305/35s but hadnt run them in a while.I found the 305/40s had better traction which I attribute to more sidewall in the 555r.From what I understand the NT05r has been really good in the stock size.And yes a 305 fits on stock wheels no problem.

 

+1 - I have the 305 40 18 555R, great improvement over the stock Goodyears. They look good on the factory rim (9.5) but they do not have the full contact patch at 35 psi. The outside of the tire (about a 1/4 inch), does not hit the pavement unless aired down to 18 psi or so. I have not had them in the rain but from the looks of the tread, they would be far better than the NT05R'S.

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OK, I've had enough with Nitto. I went to 3 Nitto dealers. I got thier names from the Nitto Web site. I tried to get Nitto 305/40/18 555R DR and all 3 found one in Tampa (I live in Florida) and found a second in GA. :banghead: WTF??? I Emailed Nitto, no response. :headscratch: Justin at VMP Tuning that dynoed my Stang runs Mickey Thompsons DR's. The h&%@ with Nitto. The problem I am having is with the sizing. MT uses a different meothod of sizing and I have yet been able to figure out the size I want based on the 305/40/18. Where can I find the measurments to match to the MT charts??? Help?? If you know what size MT's I can run please tell me.

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OK, I've had enough with Nitto. I went to 3 Nitto dealers. I got thier names from the Nitto Web site. I tried to get Nitto 305/40/18 555R DR and all 3 found one in Tampa (I live in Florida) and found a second in GA. :banghead: WTF??? I Emailed Nitto, no response. :headscratch: Justin at VMP Tuning that dynoed my Stang runs Mickey Thompsons DR's. The h&%@ with Nitto. The problem I am having is with the sizing. MT uses a different meothod of sizing and I have yet been able to figure out the size I want based on the 305/40/18. Where can I find the measurments to match to the MT charts??? Help?? If you know what size MT's I can run please tell me.

 

 

 

Do you drive mostly on the street, strip both? How wide is your rim, is it lowered, if so how much? What tires do you have now, what mods, what year etc.

 

What you do is look at the overall diameter of the tire (my 2010 stock is about 26" with the 19s and stock tires). If you are having trouble with traction I wouldn't go any smaller in diameter than what is on there currently, otherwise it will drop your rear gear ratio (this may not matter if the tire is soft enough to compensate, but it's going against what your trying to accomplish which is better traction). Then look at what rim they used for it and how wide the foot print is. So anything between 26-28" diameter should work on your car (depends on how much sidewall you want and the look your after + rear gear ratio desired, if you race at the strip the rear end gear will matter so you can cross the 1/4 at the right rpm / gear). I don't know how wide your wheels are but if their 9.5" you shouldn't have problems going up to a 305 (I currently have 295s on my stock rims with zero issues and plenty of clearance). I now have another set of rear wheels at 18s x 10 , my car isn't lowered, so I am looking at at least a 27" - 28" diameter tire for more sidewall / traction. I need some extra sidewall to fill in my wheel wells also. So I'll be doing a 305/315 - 40/45 - 18 tire in the near future. Hope this helps, if not give a few more specifics on your wheels and expectations.

 

One of these will probably be what you want if your looking at the ET Street Radial II from MT: (1/2" larger wheel than you have should be ok, but you may miss a small part of the contact patch until you let the psi down enough, the bold #s are the overall diameter)

 

3785RP 305/35R18 27X12.50R18 31 R2 10.0-12.0 11 12.5 11.5 26.4 83

 

3786RP 305/45R18 29X11.50R18 32 R2 9.5-11.0 10 11.8 10.3 28.8 91

Edited by jsarkis
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I'm running the 305/35-18 555Rs with 548/556 (with 4.10s), they hook up pretty well on the street.

Just regular street driving heats them up enough to grab all of second gear.

After all the research I did, I found this tire to be the best street longevity + decent track tire.

 

 

same here ...... i have used the 555Rs too .... great traction in summer ... but not so at 30 degrees ..... can u say slip and slide together ???

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Do you drive mostly on the street, strip both? How wide is your rim, is it lowered, if so how much? What tires do you have now, what mods, what year etc.

 

What you do is look at the overall diameter of the tire (my 2010 stock is about 26" with the 19s and stock tires). If you are having trouble with traction I wouldn't go any smaller in diameter than what is on there currently, otherwise it will drop your rear gear ratio (this may not matter if the tire is soft enough to compensate, but it's going against what your trying to accomplish which is better traction). Then look at what rim they used for it and how wide the foot print is. So anything between 26-28" diameter should work on your car (depends on how much sidewall you want and the look your after + rear gear ratio desired, if you race at the strip the rear end gear will matter so you can cross the 1/4 at the right rpm / gear). I don't know how wide your wheels are but if their 9.5" you shouldn't have problems going up to a 305 (I currently have 295s on my stock rims with zero issues and plenty of clearance). I now have another set of rear wheels at 18s x 10 , my car isn't lowered, so I am looking at at least a 27" - 28" diameter tire for more sidewall / traction. I need some extra sidewall to fill in my wheel wells also. So I'll be doing a 305/315 - 40/45 - 18 tire in the near future. Hope this helps, if not give a few more specifics on your wheels and expectations.

 

One of these will probably be what you want if your looking at the ET Street Radial II from MT: (1/2" larger wheel than you have should be ok, but you may miss a small part of the contact patch until you let the psi down enough, the bold #s are the overall diameter)

 

3785RP 305/35R18 27X12.50R18 31 R2 10.0-12.0 11 12.5 11.5 26.4 83

 

3786RP 305/45R18 29X11.50R18 32 R2 9.5-11.0 10 11.8 10.3 28.8 91

 

Right now I have the stock 9.5 rim and tires 285/40/18. All of my driving is done on the street. It is not lowered. Mods are 66mm TB, FRPP CAI, VMP 2.59 pulley, with a twin fan Anco HE. Next week the rear end gearing will be change from stock to 3.73's. It's an 08.

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OK, I've had enough with Nitto. I went to 3 Nitto dealers. I got thier names from the Nitto Web site. I tried to get Nitto 305/40/18 555R DR and all 3 found one in Tampa (I live in Florida) and found a second in GA. :banghead: WTF??? I Emailed Nitto, no response. :headscratch: Justin at VMP Tuning that dynoed my Stang runs Mickey Thompsons DR's. The h&%@ with Nitto. The problem I am having is with the sizing. MT uses a different meothod of sizing and I have yet been able to figure out the size I want based on the 305/40/18. Where can I find the measurments to match to the MT charts??? Help?? If you know what size MT's I can run please tell me.

 

If you order them through discount tire direct you will have them at your door in a day or two. Free shipping usually as well.

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