crossrush

iTrader: (1)

Alright guys, I am looking for some info on front tire size. I just got my new wheels and will be running a 295 40 18 on the rear but would like to know if anyone is running a 275 40 18 on the front? Not sure if that will be any rubbing issues. I was thinking about a 275 35 18 on the front but worry the sidewall will look too small.

//<86TA>\\

iTrader: (15)

No, use the 35 series. The 275/40 is 26.6 tall and is too much for the front
Rear should be 295/35/18, which is 26" tall and will match the front

crossrush

iTrader: (1)

The 40 series fits the rear perfect. I had a 245 45 18 on the front with no issues. Was hoping to stay away from the 35 series. Not a fan of the rubber band sidewall. Bit if i dont have a choice i guess i will have to go that route.

//<86TA>\\

iTrader: (15)

Then aspect ratio, the 2nd number of the tire size is a precentage of the width, it's not an actual number so a 35 series tire can have a taller sidewall than a 40 depending on the width of the tire.
For example my rear tires are 335/30/18 but have a taller sidewall than a 245/40/18

//<86TA>\\

iTrader: (15)

A 245/45/18 is a taller tire, but is also skinny so it's not as problematic as a wider tire of the same height. Buy what you want, but there is a good chance the 275/40 will rub the wheel openings when turning

crossrush

iTrader: (1)

I get the percentage of the sidewall. I was just trying to keep the overall diameter close. My rears are 27" tall. I just didnt think going down to a 25.5" front tire would look right.

//<86TA>\\

iTrader: (15)

Give the 275/40 a try then. Since you have 18" wheels, you can pull them in further than 17" and smaller since the tie rod will clear the wheel. If the wheels are more inboard, they will be less likely to rub.

Provided you are already using spacers and can use thinner ones

kestell123

I run 275-40-18 front and rear for my street tires,slight rubbing at full lock [parking lot turns]. A little better ride than my autocross tires that are 275-35-18. Part of those choices were about what sizes the tires I wanted for each purpose were available in.

crossrush

iTrader: (1)

I think i will give the 40 series a try then. I will be running a weld rts 18x9 with a 6.1" backspacing so it will bring the tires in a bit. I assume you are running a 9.5 or larger front rim?

kestell123

On the front I am using 9.5 x 18 c5 corvette wheels with 1.5 inch spacers, I have the c4 13 inch brake conversion which moves the wheel mounting surface out about half an inch.

crossrush

iTrader: (1)

Any chance you have a pic of them on the car? I have 2018 camaro 4 piston brembos going on the front and the conversion also pushes the wheels out .375"

kestell123

I try to post pics

kestell123

The rear is fourth gen width.with no spacers

crossrush

iTrader: (1)

Thanks for the pics. What is the back spacing for your front wheels?

kestell123

According the OE wheel web site it is 7.38

crossrush

iTrader: (1)

My wheels should sit about the same as yours then. Thanks.