Wheels advice ......again

[HarryW]

I've spent the last few hours trawling back through the archives and to be honest I'm more confused than when I started .
Been looking for a summer set of wheels to put some sticky R888 or somesuch tyres on for little while now. I think I've got it down to a set I really like , what do you think of these, they are lightweight heat treated wheels, see ULTRLITE W789

I was thinking about going with

18x8 ET38 for the front
18x9 ET35 for the rear
in Gunmetal


I know there has been issues with wheels rubbing etc but from what I can glean from my back reading these 'should' be OK , over to those that know from experience

[cooky]

they look nice Harry, but can you get R888's in 18, not sure.
Jensena bit a bit of photoshopin for me a few months back showing some alternatives, i'll try and dig out the pic.

[HarryW]

Yes photoshop would be good.
any comments re the size or even the brand as these are relatively cheap for heat treated light weight wheels imho .

[brummiewedge]

Craig at Dyno Torque has these on his Mazda LS conversion, nice wheels and his are fine with 530bhp and he,s soon going to be putting 7ltr power through them. TVR Same stud PCD as the Jap stuff also.

[HarryW]

Happy with the pcd is right, its the choice of offset i'm more worried about, hence the thread .
I've read some say the rear can rub with taller wheels/wider rims. I have a choice here of ET15 or ET38 for the 18x9 rears. Outwardly the ET38 would seem best suited(orignal being ET35 I think ). However if I've understood this malarky, would not the ET15 be better as once you factor in the rim growth by 1" (25mm) it already is 13mm outside of the normal wheels so by going with the ET15 from the standard ET35 we are effectively at ET28 i.e 7mm in from original and minimising the potential to rub . Craig .

That's unless I really am that confused and got my + & - ET's complete wrong

[Ireland]

If I stay reading this thread it's probably going to cost me money.

I'd love a wheel change .... but away from the Spiders to something non-TVR.

I shouldn't check this thread any more, but I probably will.

[ridds]

HarryW said:

Happy with the pcd is right, its the choice of offset i'm more worried about, hence the thread .
I've read some say the rear can rub with taller wheels/wider rims. I have a choice here of ET15 or ET38 for the 18x9 rears. Outwardly the ET38 would seem best suited(orignal being ET35 I think ). However if I've understood this malarky, would not the ET15 be better as once you factor in the rim growth by 1" (25mm) it already is 13mm outside of the normal wheels so by going with the ET15 from the standard ET35 we are effectively at ET28 i.e 7mm in from original and minimising the potential to rub . Craig .

That's unless I really am that confused and got my + & - ET's complete wrong

You'd just end up putting the tyres into the outer arch.

You need to keep the offset as close to nominal as possible, tweaking slightly either way to clear the worst parts of the arch. Tyre section and design of the tyres radius can play as much on your rubbing issues as the wheel offset itself.

[HarryW]

ridds said:

HarryW said:

Happy with the pcd is right, its the choice of offset i'm more worried about, hence the thread .
I've read some say the rear can rub with taller wheels/wider rims. I have a choice here of ET15 or ET38 for the 18x9 rears. Outwardly the ET38 would seem best suited(orignal being ET35 I think ). However if I've understood this malarky, would not the ET15 be better as once you factor in the rim growth by 1" (25mm) it already is 13mm outside of the normal wheels so by going with the ET15 from the standard ET35 we are effectively at ET28 i.e 7mm in from original and minimising the potential to rub . Craig .

That's unless I really am that confused and got my + & - ET's complete wrong

You'd just end up putting the tyres into the outer arch.

You need to keep the offset as close to nominal as possible, tweaking slightly either way to clear the worst parts of the arch. Tyre section and design of the tyres radius can play as much on your rubbing issues as the wheel offset itself.

Well that's not helped me ........and the answer is

[HarryW]

OK google is my friend www.1010tires.com/WheelOffsetCalculator.asp I see where I went wrong, so 38 will push the wheel out by 10mm and use 16mm on the inner arch. So assuming that ET35 was correct in the first instance for the RL's if upgrading to 9" rims idealy a ET of 48 will not ectend it outwards but use up 26mm on the inside.
Loving this new link .

[jensena]

To keep it simple - The bigger the offset, the more the wheel centre goes in to the centre of the car.

Imagine fitting a wheel with a 50mm offset onto a car, You'll be able to push 2 fingers between the tyre and the wheel arch. Now fit a wheel with a 25mm offset, you wont be able to get your fingers between the tyre and the arch, it will be tight. Make sense ??

[HarryW]

jensena said:

To keep it simple - The bigger the offset, the more the wheel centre goes in to the centre of the car.

Imagine fitting a wheel with a 50mm offset onto a car, You'll be able to push 2 fingers between the tyre and the wheel arch. Now fit a wheel with a 25mm offset, you wont be able to get your fingers between the tyre and the arch, it will be tight. Make sense ??

Agree with what you are saying, I like simple explanations . If you put a ET50 on and keep the rim the same then it will go in by 15mm though (assuming an original ET of 35), not sure how narrow your fingers are .
The increase in rim width and the interaction with different ET’s was the point I didn’t understand yesterday fully (2 variables is always bad) but now I get it .
The link I posted last night to the offset calculator is a very good one and I commend it to anyone looking into changing wheels

[Steve_T]

Really smart looking wheels Harry, they compliment the car and look like the could have been OEM, which is always the test for me. Have you got any figures for the weights of these?

Steve.

[HarryW]

Steve_T said:

Really smart looking wheels Harry, they compliment the car and look like the could have been OEM, which is always the test for me. Have you got any figures for the weights of these?

Steve.

Yes they do look more OEM than most I agree. The quality looks top notch, and a good brand name to boot. I’m not sure of the weight yet but I would imagine them to be under 8/9Kgs and all for less than £700 .
problem is the tyres could cost as much again at those sizes, I would have had 17” again but they don’t seem to do a suitable wheels for the Cerbera in 17” . Haven’t bought them yet though, just considering my options, window shopping, kicking the tyres so to speak .

I’m waiting to settle the final bill with Paul once I have the car back, which takes preference on the finances. I’ve already agreed to get an upgrade to Intrax shocks and springs so watching the cash at present .

I may see if Tim (ACT) can get them direct from Ultralite with a trade discount , matters not to me who takes their cut, but I prefer to keep my money in the TVR indy/specialist loop if I can.

[Steve_T]

HarryW said:

Steve_T said:

Really smart looking wheels Harry, they compliment the car and look like the could have been OEM, which is always the test for me. Have you got any figures for the weights of these?

Steve.

Yes they do look more OEM than most I agree. The quality looks top notch, and a good brand name to boot. I’m not sure of the weight yet but I would imagine them to be under 8/9Kgs and all for less than £700 .
problem is the tyres could cost as much again at those sizes, I would have had 17” again but they don’t seem to do a suitable wheels for the Cerbera in 17” . Haven’t bought them yet though, just considering my options, window shopping, kicking the tyres so to speak .

I’m waiting to settle the final bill with Paul once I have the car back, which takes preference on the finances. I’ve already agreed to get an upgrade to Intrax shocks and springs so watching the cash at present .

I may see if Tim (ACT) can get them direct from Ultralite with a trade discount , matters not to me who takes their cut, but I prefer to keep my money in the TVR indy/specialist loop if I can.

You don't mess about do you!

[FUBAR]

Where are our resident Photoshop Gods? Like to see a set of those photoshopped on a yellow Cerb as Im toying with changing my Spiders. Maybe we can get a discount for a bulk buy Harry? (yeah, BOTH of us...mind I'll bring the bulk if you do the buying )

ETA Im assuming my tyres would fit straight on?

Edited by FUBAR on Tuesday 30th January 11:08

[Steve_T]

Are you sure Richard? If you increase the offset by half the additional rim width, the outside edge of the tyre is in the same position relative to the body work. However the centre line of the tyre has moved in by half the additional rim width.

Steve.

[richb]

Steve_T said:

Are you sure Richard? If you increase the offset by half the additional rim width, the outside edge of the tyre is in the same position relative to the body work. However the centre line of the tyre has moved in by half the additional rim width.

Steve.

Sorry your right, told you I needed a piece of paper to work it all out. I'll delete my previous post to avoid confusion!

[Devil's Advocate]

HarryW said:

I've spent the last few hours trawling back through the archives and to be honest I'm more confused than when I started .
Been looking for a summer set of wheels to put some sticky R888 or somesuch tyres on for little while now. I think I've got it down to a set I really like , what do you think of these, they are lightweight heat treated wheels.
I was thinking about going with

18x8 ET38 for the front
18x9 ET35 for the rear
in Gunmetal

I know there has been issues with wheels rubbing etc but from what I can glean from my back reading these 'should' be OK , over to those that know from experience

Are you actually interested in buying these wheels or are you just doing market research for someone? First you want feedback on the brand, don't get any, then state that they're a good brand. Then having asked for experience of others regarding specs and wait five minutes only to prceed with some half baked attempt at working out the spec.

I think the wheels you mention look rather aftermarket (typical Japanese tuning market design) and are not at all suited to the Cerbera design.

[HarryW]

Devil's Advocate said:

HarryW said:

I've spent the last few hours trawling back through the archives and to be honest I'm more confused than when I started .
Been looking for a summer set of wheels to put some sticky R888 or somesuch tyres on for little while now. I think I've got it down to a set I really like , what do you think of these, they are lightweight heat treated wheels.
I was thinking about going with

18x8 ET38 for the front
18x9 ET35 for the rear
in Gunmetal

I know there has been issues with wheels rubbing etc but from what I can glean from my back reading these 'should' be OK , over to those that know from experience

Are you actually interested in buying these wheels or are you just doing market research for someone? First you want feedback on the brand, don't get any, then state that they're a good brand. Then having asked for experience of others regarding specs and wait five minutes only to prceed with some half baked attempt at working out the spec.

I think the wheels you mention look rather aftermarket (typical Japanese tuning market design) and are not at all suited to the Cerbera design.

You suit your name well...

[richb]

Devil's Advocate said:

Are you actually interested in buying these wheels or are you just doing market research

Ooo harsh.