Thread: RRC Rim width and height help

What year and what engine are you running? 33's will change the final drive ratio big time, and an older stock 3.5 will struggle if that's what you have - mine struggled when I went to 31's on mine. I fixed that with a fresher 3.9 EFI upgrade though.

Your drive line will also suffer with the bigger rubber on it. Axels and CV's will break easier under shock loading, etc.

You will soon find that everything will spiral out of control, you will find you'll want more power, and stronger driveline - all good fun though.

You will soon be hooked and not able to stop..

Oh, and I'll just touch on legalities - not sure if you're bothered or not, but putting 33's on without engineering is technically illegal in Vic. 50mm increase in tyre diameter from largest factory tyre only. Yeah, everyone does it and I'm not saying don't but just thought I'd let you know.

EDIT - just did some research - you have a soon to be carbied 3.9 right? I think you will notice the 33's as far as power and gearing goes. Be prepared to change down a gear more often when approaching hills - on the road in high range that is, it will be fine and a pleasure to drive in low.

245s start to eat into the turning circle, and 255s being wider tend to scate in the wet due to the width - thats my experience anyway.




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Originally Posted by bacicat

What year and what engine are you running? 33's will change the final drive ratio big time, and an older stock 3.5 will struggle if that's what you have - mine struggled when I went to 31's on mine. I fixed that with a fresher 3.9 EFI upgrade though.

Your drive line will also suffer with the bigger rubber on it. Axels and CV's will break easier under shock loading, etc.

You will soon find that everything will spiral out of control, you will find you'll want more power, and stronger driveline - all good fun though.

You will soon be hooked and not able to stop..

Oh, and I'll just touch on legalities - not sure if you're bothered or not, but putting 33's on without engineering is technically illegal in Vic. 50mm increase in tyre diameter from largest factory tyre only. Yeah, everyone does it and I'm not saying don't but just thought I'd let you know.

EDIT - just did some research - you have a soon to be carbied 3.9 right? I think you will notice the 33's as far as power and gearing goes. Be prepared to change down a gear more often when approaching hills - on the road in high range that is, it will be fine and a pleasure to drive in low.

that's right.. I got a 3.9 with a holly truck carb... thanks for the info about high range I didn't think it would effect it that much