33" or 35" tires???

[sickdayz]

I wasn’t sure where to post this, so I thought “suspension” would be a good place.

I have a small class 1 car that a race in the VORRA series. I have plenty of motor (about 500hp) and the 2D with 930 CVs and axles. I have been racing this setup for over 2 years and have only broken the axles a few times. That’s right; the 2D has been very good to me. I was using the Gear One 300m axles that do not have a shoulder, meaning the top of the splines are the same diameter as the axle center section. Those are the axles I have broken. I am now running 300m axles from KarTek; the ones with the center axle section that is the same diameter as the bottom of the spline. I have been told that these will be stronger.

Anyway; I have been thinking about running 33’ tires instead of the 35’ that I run now, so that I would have less rotating mass. My question is, what is the advantage of running a 35’ over a 33’? Is it just the ground clearance? Is it that the larger diameter tire rolls easier over bumps? Traction?, any input would be great…

I really think the 33” would be better for my car, but I don’t want to give up anything else that might be more important. Here is a pic of my car:

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[bigtex]

I run 33's on my 1400 truck currently and on another 1400 truck I used to race we ran 35's and man I wish we had 35's on the current truck,yeah its nice in my axles and bearings but you do feel more holes,bumps,rocks...and when you come out of like a check pionts and the track has gotten like a washboard MAN you feel that too more,I would say stay with the 35's.hope this helps.

[sickdayz]

Thats the kind of info i'm looking for. Real world exp... Thanks...

[sickdayz]

50 people viewed this topic and only one has enogh experience in this to post...? wow...

[43mod]

order the 33s.when you find out they run rougher and give you less diff clearance you can make me a deal on them.33x10x15 will fit my TL just fine(baja ta).

[sickdayz]

No one asked you... Go back in your hole...
I don't have a diff, i'm a buggy dork...

[KevinT4R]

I just went from 33's to 35's on my 4Runner. Aside from gaining ground clearance, I found a few more advantages.

--More sidewall (I've used 16's with both 33's and 35's) gives a smoother ride that you can really feel over small stutters.
--Better floatation in soft sand
--Improved wheel protection because there's more sidewall between the wheel and the dirt
--Bigger tires mean smaller holes

Drawbacks, of course, are greater fuel consumption, more strain on wheel bearings, more strain on steering parts, etc.

It looks like your buggy has more than enough power and chassis strength to handle bigger tires. Go for it!

[43mod]

No one asked you... Go back in your hole...
I don't have a diff, i'm a buggy dork...

sure you have a diff,it gets closer to the ground every time the rear goes into bump.Mine stays at the same level all the time.if we were running rougher tracks i would bet you would be looking for 37s

[BRINGTHERUCKUS]

Keep the 35's i bet youd hit the skid plates more with 33's (less ground clearance at bump) and that crap hurts...

[sickdayz]

Thanks guys... Actually, when i build the rear shock mounts I set it for 4" of clearence with 33" tires at full bump, so that will still work...

I'm leaning toward keeping the 35".
BRP, 37" would for sure destroy my tranny...