4.10s fatter tires??

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10-10-2008, 10:04 PM

#11

Riptide

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Quote:

Originally Posted by Stkjock

are all approved sizes IIRC for a 8.5" rim, but all tough to find and pricey

The selection for 275/50 is especially crappy.

10-10-2008, 10:42 PM

#12

Stkjock

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Quote:

Originally Posted by Riptide

The selection for 275/50 is especially crappy.

hmmm why do u say that? for our rides it's probably too tall... but it'll fit nice on the rim!

10-11-2008, 08:03 AM

#13

Norm Peterson

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Quote:

Originally Posted by Stkjock

As mentioned its diameter and not tread width that make the difference

275/40
275/45
275/50

are all approved sizes IIRC for a 8.5" rim, but all tough to find and pricey

Got it (mostly, anyway). And thanks - it made me look a little harder, which is usually a good thing

.

In 275/40 acceptability is going to depend on the manufacturer and possibly the specific tire model. Most of the Tire Rack listings that come up to the top of a size search want 9" minimum but there's at least one at 8.5".

275/45 looks to be generally OK.

Tire Rack apparently does not carry 275/50-18, but the still taller sidewall makes it easier to justify fitting to 8.5".

Norm

Last edited by Norm Peterson; 10-11-2008 at 08:06 AM.

10-11-2008, 12:03 PM

#14

Riptide

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Quote:

Originally Posted by Stkjock

hmmm why do u say that? for our rides it's probably too tall... but it'll fit nice on the rim!

I should've clarified. 275/50/R17. It's perfect for those of us who aren't lowered and have 17" wheels. Unfortunately there is only 2 or 3 models to choose from in that size.

10-11-2008, 02:12 PM

#15

stealth_GT

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Quote:

Originally Posted by Norm Peterson

The quickie math says that if your highway rpms at whatever speed now are 2880 with OE 27" tires, it'll only drop to 2700 with the 305/45-18's. Or 2500 now goes to about 2350. Whether that's enough is your call.

Norm

2350 would be real nice lol.

Right now with the stock tires with the OD off it's right about 2800@75-80mph auto,
C & L racer brenspeed 90 oct. tune.

I might not even run the CS/18S but might go with 16s all around..might look weird but should weight alot lighter.

If not,I don't mind the increased RPMs with the gear change over,I'll just remember to cruise slower to keep the RPMs down some...that should be enough.

10-11-2008, 04:34 PM

#16

Stkjock

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looks like the 275/50/18 doesnt even exist I thought I remembered it some where

10-12-2008, 06:45 PM

#17

Norm Peterson

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I only checked Tire Rack (they have the easiest navigaiton and probably the largest database). You might try Discount Tire, Vulcan Tire, or Nitto/Falken/and/or other brand names direstly.

Norm

Last edited by Norm Peterson; 10-12-2008 at 06:50 PM.