Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

gonna try to fit 305/35/18 R888's on the V

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Old 08-10-2010, 08:02 PM
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Default gonna try to fit 305/35/18 R888's on the V

Like it says...... My 295/35/18 BFG drag radials are showing belts and I need to get something that wears just a little better on the rear,Since I'm only getting about 1800 miles out of the drag radials. So I bought a set of used Toyo R888 305/35/18 & I'm gonna see how they fit or what I need to do to make them fit.
Have the Map offset trailing arms & 10" hre wheels, Also have remote adjustable air bags in the rear with my KW shocks to aid in rubbing the top.
Just have to see if & where they hit & if I can make them work....
Old 08-10-2010, 08:30 PM
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good luck, with the trailing arms and wheels you should be good.
Old 08-10-2010, 08:57 PM
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Rear subframes are going to be your problem I think. Def post up some pics after you install them.
Old 08-10-2010, 09:33 PM
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Look into the nitto nt-05s next time. i hear they are badass.
Old 08-10-2010, 10:06 PM
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Originally Posted by itsslow98
Look into the nitto nt-05s next time. i hear they are badass.
true, if you are looking for straight line, id go with the nitto's... r888's are a r-comp road tire. nittos are street and strip.. in reg comp or DR comp
Old 08-11-2010, 01:41 PM
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Originally Posted by SoJersey05V
true, if you are looking for straight line, id go with the nitto's... r888's are a r-comp road tire. nittos are street and strip.. in reg comp or DR comp
Correct.

I have run the R888s on my car on the street for about 1.5 years, and I can tell you for sure that they get less straightline traction than my Toyo T1-R street tires did. The r-comps need to get so heated up to really be sticky that you will never get them hot enough on the street unless you are doing big, smokey burnouts (in which case you would burn through the 6/32nds of tread that they start out with in about 3000-4000 miles).

I love the tire, but they are really best for the road course, not for street driving with the occasional drag strip run. You would be much better off running the Nitto 555r drag radials on the back. You will give up handling, but get lots of straightline grip. My friend, with a pulleyed 640 HP GT500, uses them and they grab pretty good on that car.

If you want the best combo for street handling and traction go with what SoJersey said, the Nitto NT-05 (great in wet too, I have heard), Toyo T1-R, or Michelin PS2 (too expensive, IMO). But if you are more into drag launches, the R888s will not be your friend.

Note: The reason I run the R888s, is because I actually use them on the road course too, so I put up with their street characteristics for the chance to run them on the road course a couple of times per year. But if I was never going to use them for lapping days, I would definitely not use them.
Old 08-11-2010, 02:44 PM
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Def wanna see pics if you're able to squeeze those puppies on there. GL
Old 08-11-2010, 02:56 PM
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good pionts tweeter,

i must say, these t1-r's are so far my favorite tire, but i would love to try the nt-05 but have to see what size i want, the t1-r is a bit pricey, but traction is better then the rt-615 i was running, strait and cornering, not to mention the rt-615 sucked in the rain, the t1-r i can roll 80 easy and not flinch... but you need to figure out whatyou want to do with the car, where you will drive the car, how much you want to spend/how often...

nt-05= great dry traction, better in strait lines
nt-05R= same as above but a drag radial

^so if you want great straight line traction, go with the nt-05 in front and the nt-05R in rear!! but if you are looking for cornering, do the nt-05 at all corners

the r888 is going to be a super great tire on the road course and give you awesome street traction (but extremely short life)
Old 08-11-2010, 03:16 PM
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Originally Posted by tweeter81
Correct.

I have run the R888s on my car on the street for about 1.5 years, and I can tell you for sure that they get less straightline traction than my Toyo T1-R street tires did. The r-comps need to get so heated up to really be sticky that you will never get them hot enough on the street unless you are doing big, smokey burnouts (in which case you would burn through the 6/32nds of tread that they start out with in about 3000-4000 miles).

I love the tire, but they are really best for the road course, not for street driving with the occasional drag strip run. You would be much better off running the Nitto 555r drag radials on the back. You will give up handling, but get lots of straightline grip. My friend, with a pulleyed 640 HP GT500, uses them and they grab pretty good on that car.

If you want the best combo for street handling and traction go with what SoJersey said, the Nitto NT-05 (great in wet too, I have heard), Toyo T1-R, or Michelin PS2 (too expensive, IMO). But if you are more into drag launches, the R888s will not be your friend.

Note: The reason I run the R888s, is because I actually use them on the road course too, so I put up with their street characteristics for the chance to run them on the road course a couple of times per year. But if I was never going to use them for lapping days, I would definitely not use them.

Well, It looks like it's a good thing I got these used r888 really cheap since it looks like I'll be using them for sizing only to see if 305's will fit.
Had the Nitto 555 drag radials & could get no traction whatsoever with them, Felt like being on ice even over 120 mph. although I got about 6000 miles outta them. Then it was Mickey Thompson D/R which only lasted about 1200 miles & then BFG D/R which lasted about 18000 miles. The Mickey Thompson was the one that hooked best but as expected was the quickest to wear out.
Good thing I don't drive this thing much, since it looks like I may be going back to Mickey Thompson ET's, But at least I'll find out if 305's can be made to fit the V since they do make a 305/35/18 also.
Let me see $600 for tires for 1200 miles= $.50 per mile . Thats twice as much for tires as the gas costs. Oh Well ..........gotta pay if your gonna play is what I always have said.
One thing I've noticed though is the tires always wear out on the inside edge and the last time I had it aligned I had them take out half the negative camber....Next time I'm Gonna have the rear Zero out the camber I think
Old 08-11-2010, 05:52 PM
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Originally Posted by skydiver
Well, It looks like it's a good thing I got these used r888 really cheap since it looks like I'll be using them for sizing only to see if 305's will fit.
Had the Nitto 555 drag radials & could get no traction whatsoever with them, Felt like being on ice even over 120 mph. although I got about 6000 miles outta them. Then it was Mickey Thompson D/R which only lasted about 1200 miles & then BFG D/R which lasted about 18000 miles. The Mickey Thompson was the one that hooked best but as expected was the quickest to wear out.
Good thing I don't drive this thing much, since it looks like I may be going back to Mickey Thompson ET's, But at least I'll find out if 305's can be made to fit the V since they do make a 305/35/18 also.
Let me see $600 for tires for 1200 miles= $.50 per mile . Thats twice as much for tires as the gas costs. Oh Well ..........gotta pay if your gonna play is what I always have said.
One thing I've noticed though is the tires always wear out on the inside edge and the last time I had it aligned I had them take out half the negative camber....Next time I'm Gonna have the rear Zero out the camber I think
If you only had the Nitto 555s before, they have 555r and 555rII now. They should both be a huge step up from the old 555. The 555r is the pure drag race tire with a lot of sidewall flex, the 555rII is the same tread design and compound as the 555r, but with a stiffer sidewall for better handling in the twisties. I guess the other thing is: do you really expect to be able to put down 864 rwHP with any tire, much less on a CTS-V that pretty much will only allow a 295-305 to fit?
Old 08-11-2010, 06:31 PM
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Originally Posted by tweeter81
If you only had the Nitto 555s before, they have 555r and 555rII now. They should both be a huge step up from the old 555. The 555r is the pure drag race tire with a lot of sidewall flex, the 555rII is the same tread design and compound as the 555r, but with a stiffer sidewall for better handling in the twisties. I guess the other thing is: do you really expect to be able to put down 864 rwHP with any tire, much less on a CTS-V that pretty much will only allow a 295-305 to fit?

The Nitto's I had were the 555r's & I was really really disappointed in the traction of them, Like I said they felt like being on ice all the way into 4th gear. The M/T et's were by far the best at hooking but wear really really quick
(about 1200 miles to the belts) ..... But some 305 M/t et's may be the only way to go. That is if I can fit the 305's on the V ............. We'll See
And I know that finding a tire to hook with 864 rwhp on a V is asking a lot.....

Thanks for the advice on some of these other tires I might need to look into

Last edited by skydiver; 08-11-2010 at 06:49 PM.
Old 08-11-2010, 08:02 PM
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Originally Posted by itsslow98
Look into the nitto nt-05s next time. i hear they are badass.
I have the nitto nt05 right now on this car...the hook up amazingly and are quiet...even handle good in the rain beleive it or not...im only running 275/40/18 on back but im due for some new tires...
Old 08-12-2010, 08:26 AM
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Right now the best D/R out is the M&H d/r... give them a try.

And as for the 555r, the new nt05r will blow those away!... RPM puts those or the m&h tires on their 8 sec z06s
Old 08-12-2010, 11:53 AM
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Originally Posted by SoJersey05V
Right now the best D/R out is the M&H d/r... give them a try.

And as for the 555r, the new nt05r will blow those away!... RPM puts those or the m&h tires on their 8 sec z06s
Yeah i'm currently running M&H 275/45 /18 and they hook like crazy on the street, they are tall at 28" so it does kill some gear, but so far they've been great.
Old 08-12-2010, 11:57 AM
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Originally Posted by CTS-V LEE
I have the nitto nt05 right now on this car...the hook up amazingly and are quiet...even handle good in the rain beleive it or not...im only running 275/40/18 on back but im due for some new tires...
Looks like the nto5r are very very limited on sizes available in 18"
285/40/18
305/45/18
315/40/18
these are the only sizes Nitto's site lists

305/45/18 would work if I could figure out what to put up front to match
that size (my 255/40/18 are way off & don't think I can get
anything big enough on the front
Old 08-12-2010, 04:02 PM
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<------- Patiently waiting for Bob to give up and just tub the rear


Or just widebody the rear fenders...that'll allow for some good meat also.
Old 08-12-2010, 05:14 PM
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Originally Posted by deedubb
<------- Patiently waiting for Bob to give up and just tub the rear


Or just widebody the rear fenders...that'll allow for some good meat also.
You know............. I have come SOoooo close to those widebody rear fenders several times , But when it come down to it ....
! Those things are just too damn ugly****** I just can't !!!
Old 08-12-2010, 06:03 PM
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Originally Posted by skydiver
You know............. I have come SOoooo close to those widebody rear fenders several times , But when it come down to it ....
! Those things are just too damn ugly****** I just can't !!!
it would look alright if somebody took it a step further and molded the widebody kit in with some bondo or something to make it look like it belongs on the car. they way it looks as specter sells it looks like they make fender flairs for jeeps lol
Old 08-12-2010, 06:05 PM
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That's what I am thinking. If you add the little flare then add some material so it gradually flows into the widest part it'd look ****! I hate that it looks like a noodle (very large noodle) just sitting on the fender.
Old 08-13-2010, 07:23 AM
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It's good to see the V is still running well for you Bob. Bob
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