rim offsets HELP!!

[Nashy]

hey if anybody with knowledge of rim offsets can you please help

i am looking at some new rims for my car they are drag dr19 17'rims but the problem is the offset is 42/45mm and my stock wheels are 54mm would dropping down to 45mm be a problem for me like occur rubbing on fenders or brake calipers n that stuff ive only read a bit and dont quite understand it so any info in plain enlgish would be extremely helpfull

sites for the rims and bolt pattern for my car

http://www.vehicle-bolt-pattern.com/toyota-lug-reference-guide.html

http://www.dragwheels.com/product.asp?ID=59

[anhphuongvu]

because subaru used the same pcd, 5X100

a lot of the rims with high off fit subaru much much better.

the wheels that you are after, the offset for the rear wheels will be horrible, it will look like this

find a wheel with a more lower offset. refer below post for more details

here are some details you maybe interested in. these are taken from ozcelica.com

these are not my work and really appreciate the guys that written them.

PS: Noog/Tones, i can delete your quotes if asked.

Celica wheel sizes and offsets

(all use 5x100 PCD)

18x8.5 +44

18x8.5 +40

18x8.0 +37 sits flush

18x7.5 +42

18x7.5 +35 minimal rubbing when turning real hard

18x7.5 +30

17x8.0 +38

17x8.0 +35 sits flush

17x8.0 +32 sits flush

17x7.5 +30 sits flush

17x7.0 +40

16x6.5 +39 Stock ZR offset

15x6.5 +39 Stock SX offset

for noog star post, i copied some of the details and pics.

Okay since I am at home sick right now I have abit of \"free time\" so I have decided to make this thread to try and clarify what wheel offsets are and how they are calculated. Also most importantly how they make or break a car and hopefully if I educate even only just one member... That is one less offset fail car we have to deal with in society.

So what is offset? Good question, well its very simple wheel offset is the distance from its hub-mounting surface to the centre-line of the wheel. Simple explanation of this is to describe 3 general types of offset.

Positive offset: Where the hub-mounting surface is towards the front aka face of the rim.

Zero offset: Where the hub-mounting surface is where the wheel centre-line is.

Negative offset: Where the hub-mounting surface is towards the rear of the wheel

You will find the offset of your wheels with a stamp (ET) somewhere on the rim on most wheels, otherwise you should see them on a sticker. If still no luck... Congratulations you are about to learn how calculate offset on your wheels! It is just a simple mathematics calculation.

Offset = Backspace - (Width/2). This will give you offset in inches, then multiply that total by 25.4 to get the normal measurement in mm.

For example:

We put the wheel face down and put a piece of wood across the back of it to achieve a flat surface. We then measure down to the hub-mounting surface. The measurement reads 5\". Therefore the backspace is 5\". We then measure the overall diameter of the wheel (lip to lip) and it reads 8.5\"

Now here is the fun part, we put them into the formula:

5\" - (8.5\" divided by 2) = 0.75\"... Then 0.75\" x 25.4 = 19.05 round this figure = an offset of +19mm.

Congratulations you are now as smart as an online calculator.

Now you are all getting pretty sick of words right? Well here are some pictures after all a picture is worth a thousand words :).

Stock rims - 16x6.5 +39 (205/50/R16 Advan tyres). Stock body with minor lowering via Eibach Pro-kit, no significant alignment settings.

G.Max - 17x7 +42 (205/45/R17 Kumho 712 tyres). Same suspension setup with trial fitting of a body kit notice the rear wheels... This is what people nickname offset fail.

5Zigen - 17x7.5 +35 (225/45/R17 Bridgestone RE01). Here\'s a friends/old members car, the car had mild camber settings and was lowered with coilovers. (Closer to a decent fitment).

Work Meister - 17x8 +23 (plus 5mm spacer effectively 17x8 +18) (Bridgestone Potenza RE001 215/45/R17 tyres *large footprint*). These are recent pictures the new tyres are alot larger in footprint than the Falkens so most the stretch is now gone. Camber is at -2.0 deg at the front, -1.5 deg at the rear.

Work Meister - 17x8 +23 (plus 20mm bolt on spacers effectively 17x8 +3) (Bridgestone Potenza RE001 215/45/R17 tyres *large footprint*) Camber is at -2.5 deg at the front, -2.2 deg at the rear.

P.S. One more thing to note none of my configurations needs rolling of the guards up until the fitting of the RE001 tyres. Since then I had to roll the inner lips of the rear guards (pictured) no more rubbing has been happening.

Edited September 22, 2011 by anhphuongvu

[Nashy]

I dont quite Understand all that stuff so what your saying by getting the dr19 it will be a offset failure?to nake it sit flush using 17" rims its gotta be a lower offset like 30+? Ive saw on the net using spacers or somethig could these help in getting the correct offset to match the rim and wheels to beflush with my car? Plz be patient and helpfull

[anhphuongvu]

those dr19 looks like bbs wheel that came with bmw e39 530i sport

and the offset on those dr19 will be weak. the wheel will be too sunk

here what i mean

imagine the screw is the wheel and the wood is the car

having a high offset will make the wheel more sunk into the car, and having a lower offset will poke it out more

its good to have a flush offset as shown in diagram 3

so having one of these offset in these wheels will make it more flush

18x8.0 +37 sits flush

18x7.5 +35 minimal rubbing when turning real hard

17x8.0 +35 sits flush

17x8.0 +32 sits flush

17x7.5 +30 sits flush

a nice fitment would be this car. notice how the rear wheels is more flush to the side of the car body. it has 17x7.5 +35 wheels (225/45/R17 size tyres)

having a high offset wheel like this below, you can see the wheel more sunk inside. it has 17x7 +42 wheels (205/45/R17 size tyres)

Edited September 23, 2011 by anhphuongvu

[Nashy]

ok i undedsratnd now how rim offsets aRE CALCULATED and how it all works now had to really concentrate on it. so because there 45mm at most for the dr19 and my stock rims at the moment are 54mm bringing them down will sink it in more right?what if i got spacers do they push it back out by however many mm i choose the spacer to be?

[anhphuongvu]

what wheels do you have on at the moment?

looking at your profile, i believe your using the stock celica sx wheels?

they are 15X6.5 +39 (remember the higher the offset, more sunk it will be)

im not sure where you are getting 54 from.

spacers do help with having a better fitment, but they are illegal (in all states i believe)

there are still many people that run spaces tho

the spacer that you need will require the hub centric diameter of 54.1mm.

if not, you will require a hub ring to fill the gap.

you will be looking for a 5/10mm bolt on spacer for the +42/45 offset wheels.

do not buy slip on spacers

[Nashy]

I just thought in the link about my car in my first post it said 54mm somewhere so i assumed it was the offset of 54mm but yes i am using stock wheels and my gf dad manages a tyre shop (bridgstone) and i asked him bout fitting spacers and he said no dont do it but hasnt given a reason why so i am left with just the option to choose another set of rims i cant find any alternative to get the right offset for the rims i want

[anhphuongvu]

it is hard to find rims in the offset you want

especially those in these offset

18x8.0 +37 sits flush

18x7.5 +35 minimal rubbing when turning real hard

17x8.0 +35 sits flush

17x8.0 +32 sits flush

17x7.5 +30 sits flush

i currently bought a set of 18X8.0 +35

still waiting to get tyres, when i do, ill upload pics to show you how the offset would be like

it is better to find the right wheels with the right offset, you wouldnt want to go through several set of sunk wheels.

i currently have 17X7.0 +40 rims on my celica and it is sunk as, its better to do it once, do it right

[Nashy]

Yea i know its harder then i thought choosing sets ive always thought that ya choose a size n thats it but apparently not so gunna have to resort to finding a new set preferably gloss black face with chrome lip as my cars silver if it wasnt silver id prob have rims picked out by now jus to hard to find nice 1s for silver cars any ideas on rims thats gunna fit my car but in dr19 style

Edited September 24, 2011 by Nashy

[anhphuongvu]

here are some 18X8 +35 offset rims on my celica

the rear could use another -5/10 offset and will make the rears looks better