1g Wheels and Tires Size Questions [merged]fit fitment

[jpdst29]

All 1g wheel and tire size questions from the newbie sections are merged here.

hi,
i am interested in putting 18" motegi MR-7 wheels on my 1991 plymouth laser. my only problem is i do not know if they will fit in the wheel well with tires. if anyone out there has 18" wheels on their laser....please let me know so and also tell me what size tire you have on the wheel. i would also like to know how snugly they fit in the wheel well. if 18's dont fit i guess i will have to go for 17 inch wheels. what is a good size tire that would fit a 17" wheel?

thanks in advance for any help you guys can give me

jerome

 

[wret]

if you can avoid wheel spacers please do.

Good advice but does anyone here know what wheel spacers do? They lower offset. He has selected a wheel with close to ideal offset so he won't be needing them.

v8killar, you have answered a few of the standard questions already, but if you answer the rest, we can give you some accurate advice. 245's are an extreme setup. Many of us run them but you have to know what is involved.

 

[dsmfreak20]

incorrect. wheel spacers move the mouting surface further out from the vehicle. so say for example hes using a wheel with a 38 mm offset. now he puts on a 2 mm spacer. ( not recommended by the way) then it will be equivilant to if he had put on a wheel with a 40mm offset. the higher the offset the further the face of the wheel is away from the center of the wheel. the mod is right though. if you do the 245s regarless of offset there is going to be some difficulties.

 

[donmagicjuan]

incorrect. wheel spacers move the mouting surface further out from the vehicle. so say for example hes using a wheel with a 38 mm offset. now he puts on a 2 mm spacer. ( not recommended by the way) then it will be equivilant to if he had put on a wheel with a 40mm offset. the higher the offset the further the face of the wheel is away from the center of the wheel.

You might want to rethink this. You have it backwards, and wret was completely correct. And for the record, when challenging moderators/wisemen, it's generally in your best interest to do so with a little tact.

 

[wret]

Okay, now we know a little more. Your conservative lowering means you will not need much rear camber adjustment. This is important. You can mount 235/45/17, 245/40/17 or 245/45/17's. The first two will not give you much trouble with rubbing but any of these will require rolling the rear fender flanges. The 245/40/17's are a little smaller than stock diameter and will give you a slight torque advantage. The 245/45/17's are larger than stock and you would have to maintain some negative rear camber to keep them from rubbing. You will not need spacers as they DECREASE offset. Not what you need. There has not been a spacer yet invented that will increase offset, but if you can come up with one you'll make a fortune.

 

[dsmfreak20]

i think we were talking about two different things. i just reread all the posts. no more posting when im tired. if i seemed to disrespect none intended.

 

[Kevin TSI]

Will 235/50/16 tires work on these wheels safely?

 

[twicks69]

I ran 215/55's and 225/50's with no problems on my rota slipstream 16x7 40mm offset on my 2G AWD.

I know that you will probably get reccomendations from the tire retailer to go with one of these sizes.

 

[turbolaserawd]

Im not sure 100% i know what a 'staggered look' is, but from what im getting from this forum its having wider wheels in the back than in the front so they stick out. Correct me if im wrong.

Seeing as how having wider wheels in the back of an AWD will hurt it, couldnt you just get wheel spacers? They make them for both 1g's and 2g's, FWD and AWD for the front and rear wheels. So if you buy all the same size wheels and put the wheel spacers in the rear you could get your staggered look without having wider wheels in the rear. Or would this still hurt it? having the same effect as wider rear wheels because the distance from the outer lip of the rear left wheel to right rear wheel is going to be wider than the distance from the outer lip on the front left to front right wheel? Unfortunatley i dont have any pics of dsms (let alone any cars) with this, im sure you could picture it in your head though. Finding someone who could Photo Shop it on a dsm and post it in here would be a good example , but i dont know anyone who has Photo Shop so i guess im no help. H&R makes wheel spacers for 1gs and 2gs, AWD and FWD here's the link to their site. Just put in your year, make and model of your dsm and they'll come up in the search results.

 

[Locke]

The issue, as far as ruining your AWD, is overall tire diameter. You can run any wheel/tire combo you want, that will fit, AS LONG AS the overall diameter of the tires are the same at all four corners.

 

[thegchild04]

The issue, as far as ruining your AWD, is overall tire diameter. You can run any wheel/tire combo you want, that will fit, AS LONG AS the overall diameter of the tires are the same at all four corners.

Correct ^, the staggering affect would be to achieve the look of a rwd car with a dished (lip) on the rear wheels. It is exclusively for looks, and it looks very good on any car I might add, if done right.

 

[pnishr]

Width is in NO WAY the issue. The issue, as stated immediately above, is overall DIAMETER. That's where it starts to F-up your driveline due to the Rear wheels spinning at a different speed than the front for a given speed.

If you could find for example, a set of 245/45 R17s, that were the same diameter as some 275/35 R18s, it'd work (though to be mathematically correct they'd have to be 275/35.6 R18) But, different tire manufacturers build tires SLIGHTLY different. There would be no inherent problem directly regarding the WIDTH of tire. ONLY in relation to sidewall height, but you can get different sidewalls aspects for a given width.

 

[trackTSIawd]

I had this problem with peoples information and cleared it up the best I could in a thread called "just want to clear up some things about staggered" I th ink its in the drivetrain tech forum. Anyways... its all about tire tuning the diamter is what you need to worry about... the small amount of tire flex you see on a wider wheel can be taken care of with a narrower tire on the wider wheel.

 

[Flash]

Staggered fit on AWD... its for a reason though.

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[thegchild04]

Point taken, but on that car the wider is in the front and that makes it "look" like ass

 

[Flash]

They did it to help reduce understeer.

 

[vinnybean]

i got a 1g and i am putting 17 inch wheels from the gsx/3G. The wheels are 7.5 inches wide. I want to keep the speedometer correct. I do not want the widest tires i can put on, but ones that are a little wider than stock without worrying if they will rub or not. I wouldn't mind putting 225/45/17's on. Also i am getting the G-force t/a's KDW 2's.

 

[red_devil]

will 225/40/18 work being cheaper and a little smaller or should I go for 235/40/18?

 

[yokotabrat]

Here is a good site that will help you with calculating speedometer error due to tire size differences: http://www.miata.net/garage/tirecalc.html

According to it, the 225/45/17 you mention is only a 0.4% difference compared to 205/55/16, so you should be okay provided the offset is correct on the 3g wheels.

 

[president95]

You're only on a 7.5 inch wheel; stick with the 225.

 

[kromwell]

yeah, 225/40/18 will work fine. I am running an 18x8" wheel with the same tire size and a +42 offset. Wheel fitment is perfect. I'm running a different suspension though... I have Tein SS Coilovers. I didn't drop it all the way though, because I didn't want that "slammed" look.

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[speedy_talon28]

I searched for this question and sure I their was a lot but, not what I was looking for. I have a 1g talon, with 17x7 rims that aren't on yet, I want to drop it 2 inches. My question is: when I drop it 2 inches can I use 215/45/17?

 

[KazooGS-T]

Sure you can. I have 245/45-17 tires on my 1st gen AWD.

 

[speedy_talon28]

they don't rub????

 

[sleepr7]

Whether or not a specific tire size will rub depends greatly on your wheel offset. But you will be fine with 215's unless you are running a much higher than stock offset, which I believe to be 46mm. Even then you can always use a spacer to set out your wheels.

 

[jbillakdsm]

Not to play devil's advocate, but be careful not only about rubbing on the inside, but also on the outside. I wanted to drop my Talon 2" but with my 8" wide 16's there was no way without damaging the fender during normal driving. I settled on the Eibach Pro-Kit and it gives me the lowered look while also giving me drivability and the extra ground clearance for driveways and roadkill.