taiyahaba ga hiroi. norigokochi ga ii wake da.

The tires are wide. No wonder the ride is comfortable.

Breakdown of taiyahaba ga hiroi. norigokochi ga ii wake da.

• が: subject particle
• いい: good
• 広ひろい: wide
• わけ だ: it follows that

Questions & Answers about taiyahaba ga hiroi. norigokochi ga ii wake da.

What exactly is タイヤ幅?

タイヤ幅 is a compound noun:

• タイヤ = tire
• 幅 = width

So タイヤ幅 means tire width or the width of the tire.

Japanese often combines nouns like this without using of. So instead of saying something like タイヤの幅, it is very natural to say タイヤ幅, especially in product descriptions, specs, reviews, and technical language.

Why is が used after タイヤ幅 and 乗り心地?

In both parts, が marks the thing being described.

• タイヤ幅が広い = the tire width is wide
• 乗り心地がいい = the ride comfort is good

This is very common with adjectives in Japanese. The noun being evaluated often takes が.

You can think of the pattern as:

• A が adjective
• B が adjective

So here:

• タイヤ幅 is what is 広い
• 乗り心地 is what is いい

A learner may expect は, but が is very natural when simply describing a property.

Why is 広い used for width? I thought 広い meant spacious or in the sense of area.