Recently caught a flat in my Pzeros, so i been riding around
with my Nitto555R Drag radials on my stock rims.
I see the speed rating for the tires are a R rating.

Toying around with a Integra today I found myself going
130+. Wondering if these tires can hold up at speeds.

thanks

 

Well you all ready know they have an R rating. Which means one of two things.

1)
2)Rated max speed of 149 mph.

 

i took mine when i had my 03 cobra to 160 mph and they did just fine.

 

Are you sure the R is the speed rating and not the radial designation?

An R speed rating is only 106 mph. Obviously, they can handle higher speeds than that, being a drag tire. However, they may not be built for sustained high speed running.

 

anybody know if it's any different on the spec 2 555r's with the stronger sidewall for autocross?

 

Depending on the size, your 555Rs have a V (149 mph) or Y (186 mph) speed rating.

205/55 R14 85V
P275/60 R15 107V
P275/50 R15 101V
P245/50 R16 96V
P245/45 R17 95V
P275/40 R17 93V
315/35 R17 102V
285/35 ZR18 97Y
305/45 R18 110V
305/35 ZR18 101Y

 

Just what I thought....someone needs to learn how to read tire specs.

 

Yeah, it's amazing what kind of information you can find on the manufacturer's web site...

 

everyone always warned me about not going too fast or driving in the rain with these tires and also how fast they wear out and none of it was ever true
maybe I got a lucky set these tires were the perfect product