Hi all,
I know I've seemingly covered this territory before (with my "380s Lowered On Big Rims" thread), but I've one simple question re the tyres...
Driven the same, would 18s last longer than 19s? That is, if one wanted to buy a set of 19s, is there any advantage (other than cost) to getting 18s instead?
Thanks.

they should wear the same same. the only difference should be how it rides. i say got the 19's

Physics says that a 19in rim and lower profile tyre is more slightly likely to buckle than an 18in on a slightly higher profile tyre. Dont know where you drive or how much that matters to you.
Cheers
Damo

no tyre expert but id say they r the same ?

however ur 19's might cause more camber if u wanted the car to be lower to the ground ... but yer ....

i think 18's fit the archs well as is

If you were to compare the exact same brand with the exact same composition/tread etc. and the exact same width, i'd say the the 19" would wear more than the 18" simply for the fact that the tyre has less "padding" to absorb impacts. That's just a guess though :).

I wonder if the 19s have less heat retention due to smaller side walls??
It would only be minute but it was an interesting factor i had never thought of??
Might do some research for fun

If you were to compare the exact same brand with the exact same composition/tread etc. and the exact same width, i'd say the the 19" would wear more than the 18" simply for the fact that the tyre has less "padding" to absorb impacts. That's just a guess though :).

so by "impacting" the tyres e.g. bumps and so on... it will wear the tyres? that makes no sence to me....

I know we are talking 18s and 19s here but I just thought I would let you know that I have 20s on mine and have just clocked up 30,000 kays and they still look good and legal. I would say about 30% tread left before wear indicators.

Cheers.

If you were to compare the exact same brand with the exact same composition/tread etc. and the exact same width, i'd say the the 19" would wear more than the 18" simply for the fact that the tyre has less "padding" to absorb impacts. That's just a guess though :).

i thought you only get tyre wear if your allignment is out or wheel balance is out :confused: how does less padding to absorb impact increase tyre wear? less padding just means a harsher ride and most likely danger to your rims if you hit a pot hole.

I wonder if the 19s have less heat retention due to smaller side walls??
It would only be minute but it was an interesting factor i had never thought of??
Might do some research for fun

If anything they'd have greater heat retention because of the reduced surface area over which to lose the heat.

I know we are talking 18s and 19s here but I just thought I would let you know that I have 20s on mine and have just clocked up 30,000 kays and they still look good and legal. I would say about 30% tread left before wear indicators.

Cheers.

I assume you've had the 20s since new? I was wondering if your driving habits/style had changed since putting on the 20s (ie fear of potholes, etc).

I assume you've had the 20s since new? I was wondering if your driving habits/style had changed since putting on the 20s (ie fear of potholes, etc).

You are correct, since new.

I do whince everytime I hit a pothole etc but doing most of my commuting within the A.C.T they are very few and far between. I do keep my pressures up to around 45psi to try and minimise the risk of rim damage.

So far so good.

45psi! Wow, does the tyre profile size change the psi required? (ie lower profile, higher pressure)

45psi! Wow, does the tyre profile size change the psi required? (ie lower profile, higher pressure)

Yep, rang dozens of tyre places and all said to run them between 40-45psi.

i thought you only get tyre wear if your allignment is out or wheel balance is out :confused: how does less padding to absorb impact increase tyre wear? less padding just means a harsher ride and most likely danger to your rims if you hit a pot hole.
You get tyre wear no matter what. if your balance or alignment is out, it just wears unevenly.

so by "impacting" the tyres e.g. bumps and so on... it will wear the tyres? that makes no sence to me....
Any impact will wear the 2 surfaces in the impact, basic laws of physics.

Anyway i'm not saying this is what happens, its just what my guess is.

Anyone got a 380 VRX on standard 17" rims with wider tyres than the standard 215/55 that came one the car. I would like to know how wide I can go when I replace them on the standard rim.

Anyone got a 380 VRX on standard 17" rims with wider tyres than the standard 215/55 that came one the car. I would like to know how wide I can go when I replace them on the standard rim.

I have after market 17x8's on my TJ and I have always had 235/45 on them. Great to save the wheel if you scrape a gutter. I have had a couple of scrapes but not a mark on the wheel. I wouldn't go much wider than that though.

Anyone got a 380 VRX on standard 17" rims with wider tyres than the standard 215/55 that came one the car. I would like to know how wide I can go when I replace them on the standard rim.

I intend to replace mine with 235/55. It seems that is the widest on the standard rim according to Tyrepower in Qld.

listen to m4ddog - avoid pot holes, speed bumps, stones, un-even roads, any basic road surfaces.. these all make the "less padded" 19's wear down more!!!...

listen to m4ddog - avoid pot holes, speed bumps, stones, un-even roads, any basic road surfaces.. these all make the "less padded" 19's wear down more!!!...
lol padding is probably the wrong word, flexing? tyre flex is it? I'm not 100% sure.

listen to m4ddog - avoid pot holes, speed bumps, stones, un-even roads, any basic road surfaces.. these all make the "less padded" 19's wear down more!!!...

Thanks for the advice. My mechanic busted a 18" rim (lowered VS Berlina) on a pothole; that's why I asked.
This is kinda deviating from the thread, but does anybody know if 380 rims share stud pattern with either Holden or Ford?

Thanks for the advice. My mechanic busted a 18" rim (lowered VS Berlina) on a pothole; that's why I asked.
This is kinda deviating from the thread, but does anybody know if 380 rims share stud pattern with either Holden or Ford?
Same as AU onwards ford, holden is completely different.

Same as AU onwards ford, holden is completely different.

I see you have AU rims on your car, looks good.
Pity Holden rims won't fit, there seems to be more variety amoungst the HSV rims than Ford rims but I'll keep an eye out for the various XR rims I see on the road.